So what would be easier of the two to attempt after killing Anub/Razu?

Noth, then Faerlinna/Maexxena. Even if by the grace of god you managed to kill Gothik before the previously mentioned, you would be left with a near impossible final wing boss instead of a trivial one.

Faerlina, Gothik is one of the most difficult encounters in the zone.

Nothing more to see here. Plus you already have all the gear for Faerlina - you got it in MC!

Faerlina is easy with decent epic FR gear and people who can mash cleanse. Make sure to bring at least 15 healers though.

Razu
Anub
Noth
GWF (Bring Greater Fire Protection Potions)
Maex (Stonescale potions!)
Heigan
Patchwerk through Thaddius

thanks =) and sorry if it was a dumb question (which it was), our original roadmap was Razu->Anub->noth->spiderwing->patchwerk etc but someone fed me some bad info. let this thread die >.<

He also has the worst loot in the zone.

Gothik "ive got frost res and crap bracers" the Harvestor or Grand Widow "TF comparable tanking sword" Faerlina.

And yes, anything above this are valid reasons.

Whilst we're on the topic of Naxx difficulty... Is AQ40 gear percieved to be highly recommended for starting in Naxx? My guild is currently farming BWL, although having somewhat difficulty with downing Nef again due to the summer time, when we get a stable amount of players back online we're hoping to tackle some bosses in Naxx and skipping AQ40 altogether, seeing as the gear to be gained in AQ40 is somewhat trivial and less PvE orientated compared to the gear from Naxx.

Razuvious and Anub are far from gear checks.

raz doesn't require anything special except +spell hit on your priests (zg craftable stes)
anub is a fight that could go on forever (which it is most likely to do if he evades at any stage :P) and it pretty simple if everyone focuses

37 out of 40 people in my current raid are wearing AQ40 gear, at least 1-6 pieces. So yes, it's worth it.

Hell yeah its worth it. My warlock is currently wearing 11 AQ40 pieces, 2 Naxx pieces, 1 MC trinket (no prizes for guessing which one), and 1 BWL trinket.

And 1 green wand. Lunar wand of Shadow Wrath, how I love thee.

While there are (relatively speaking) much fewer healing/tanking upgrades, there is an enormous amount of dps upgrades, for every class, in there.

Besides, you are going to have to cast out the retard net one way or another.

And if you have too much trouble with C'thun/TE, you can go and kill a few of the easier Naxx bosses, for a bit of morale building.

I've always thought AQ40 had a lot of upgrades. I don't know why so many people complained about its loot.

One of the best things about AQ40 is the weapon upgrades. Imperial Qiraji Regalia and Armaments really let you smooth out the weapons across your whole guild. Your druids and priests get a very decent healing staff, and any of your mages or warlocks that didn't pick up a Staff of the Shadow Flame get a very comparable weapon. Rogues and dps warriors get a great dagger, and any warriors that missed out on Elementium Reinforced Bulwark get a comparable shield. And just to add, if Blessed Qiraji Bulwark didn't exist, every warrior in my guild would still be using Drillborer Disk or that shield from Buru. Thanks AQ40!

Anyways, the loot in AQ40 is very worth looting. Also, the encounters are really fun. You're cheating yourself out of some great encounters if you don't check out Twin Emperors and C'thun.

After a guild merge, we were in a situation where we had Emps on farm, both guilds had gotten Eye of C'thun down once or twice but not much beyond that, and nothing dead in Naxx.

We (officers) all agreed that for a number of reasons, going for C'thun first would be worth it, so we did that. We started raiding on a Wednesday (EU guild), had Eye of C'thun down consistenly Thursday and dropped C'thun himself on Sunday, with no raids friday/saturday. That's now almost three weeks ago, and since then we've also gotten first kills on Anub, Razuvious, Noth, Ouro and Faerlina. I honestly doubt we would have come as far in Naxx had we gone straight for that instead of doing C'thun first. Heck, we've even got a full night left before reset to work on Maexxna.

We also got two Death's Sting on our first three C'thun kills, so I'm heavily biased towards saying AQ was worth it for us.

To answer the OP:
Bring GFPP and FR gear and lots of it, bring a fair number of competent healers, and you'll kill Faerlina. We haven't tried Gothik but we more or less learned and killed Faerlina in one night.

I understand that BWL -> AQ40 is a large upgrade, and dont get me wrong I'm one of the ppl that WANT to do AQ40 for its events and loot... But I'm having a hard time convincing other leaders that although Naxx loot greatly surpasses AQ40 loot I dont think we can get very far without it.
At which point does the AQ40 gear and experience become a neccesity in Naxx? Keep in mind we have trouble downing Nef without mass consumables and dont have the experience of full focus events like some encounters in AQ40 and Naxx where any mistake really means its gonna be a whipe.

While theres another absurdly long thread on this exact topic already...

No. If you cant do nef like the back of your hand, you shouldn't be going anywhere near naxx. Get at least the front four in aq down before attempting the two "easy non gear checks" (Anub/Raz). After that, its debatable what you do, but its generally accepted that you should be able to do twin emps in order to have the level of sophistication required of nax.

AQ40 encounters dont have much of a learning curve, they have a higher execution curve tho (the previously mentioned "Retard Net")

Assuming you have NR crafted (or can get it quickly), in one instance reset you should be able to step foot in AQ40 and move all the way through Huhu.

Skerem is pretty trivial, Family isnt that hard, Sartura is, well, youve seen the ymntd, and Fankriss is free loots.

Huhu is decently difficult, Emps can be brutal but after them you have access to one of the most fun encounters in the game.

AQ40 is totally worth it.

To be fair skill and high consumable use can make up for a lack of gear, the pure lack of weapon drops my guild has had [nothing at all from BWL or AQ, not a claw or cts, aqr or ashcandy - no rag 2hers either] supprisingly small effect, we can kill cthun in 2 weakens and twin emps in under 10mins.
We dont have overly good amounts of casters either, a small core with a large turnover keeps the high amount of caster drops relativly low in effect, we do however have very well geared feral druids and hunters, however the hunters arent that good despite that, and as we generally have low druids we dont have any feral ones.

We've not done Patchwerk or Noth yet and alot of people are slightly worried about our DPS there, however at the supprising amount we are able to put out when everyone focuses I doubt we will have much problem, despite the lack of drops :)

So gear is not everything assuming you have some skilled players.... and ofcourse human sword rogues with all your DPS warriors fury spec :P

We do C'Thun in slightly over two weakens (5-10% after the 2nd one) and have no problem with Noth before the third balcony. Neither of those are with signifigant consumables.

We tend to be healer-lite (wihch really hurt us on learning faerlina), but with the plethora of viskags, deathbringers, nightmare blades + ezmode alliance... not forgetting a marginal dominance on ORBs
Ontop of human sword rogues, human fury warriors (edgemasters rox) with maces/swords (Z'DoW 4tw, supprisingly no one tkes OEBs) and the non human rogues all daggers (muggers/ACLG).. and ofcourse class restrictions on T2.5 (fu druids/loladins/huntards/priests) and moderatly decent balance of T2 drops.

They have pretty damned good armour, just not the weapons to complement them with :)

Thanks for the feedback all, and my apologies for overlooking the thread with similar questions and arguements, I gave it a read after you pointed it out so thx ;]