We 1shot sarth+2 last week and are planning to start work on sarth +3 this week. I have a set that gets me ~55k buffed (polar pieces + PVP pieces).

My guild is also in a nice situation in that we have 1 pretty well geared tank of each class, meaning that along with me, we also have a well geared DK tank. My main question is wether it would be better to have me tank sarth, or the DK. It prettymuch seems to come down to my larger health buffer Vs his better on use mitigation abilities such as boneshield, icebound fort and anti-magic shell.

Have any of you experiened both classes tanking and have any input as to which seems more effective given that both are available?

Sorry, I should mention that I am specifically talking about 25man. Last week (2 drakes) we had myself on Sarth, a pali on the blazes/welps and a warrior on the drakes with the DK sitting out. In tank chat, both the pali and DK seemed to think that the DK would make a better tank for when we do it with 3 drakes up.

We use 4 tanks usually, 2 on the adds. How many healers are you using? Our breakthrough came when we dropped from 7 to 6 to 5 healers for it. The extra DPS lets you down Tenebron before Shadron and unless you're unlucky on walls, Shadron before Vesperon. This pretty much trivialises the fight as you don't get the cross over of Power of Shadron - Spell - World of Warcraft and Twilight Torment - Spell - World of Warcraft together making it so much easier. After that you just have to have someone that can take the blows of Sartharion once all the drakes are down, its a non-trivial increase in damage taken, its why I don't advocate using the Polar set for 25 man. Either that or you can have the drake Warrior tank in his normal tanking set taunt it off you at that point.

As for Guardian Spirit I've never had any issues with it and have seen it several times save me from a killing blow and top me up (whilst disappearing as its consumed).

This was my thinking also. My main question still stands - assuming we do have a number of critical breaths do deal with, what is better from a healing/surviving perspective while we are learning the fight - a feral with a high HP buffer with barkskin/SI for 1 breath, or a DK with multiple CDs available to him. Assuming both will also have outside cooldowns being used on them. Do you feel the difference between the 2 tanks trivial or that the benefits of 1 outweighs the other.

Much like a how feral makes the best OT on patch, or how a warrior/pali's block mechanic makes them better at taking a lot of small hits. All tanks are obviously viable, some just more-so in specific instances.

Sounds like someone wasn't happy about sitting to me. The DK or the Druid will be effective given that both players are equally skilled.

From what I've heard/seen on 3 drake a DK's cool downs is what makes or breaks it. If he has enough to last while you guys kill shadron, then he's fine but once all 3 adds are down you better have a mitigation geared tank taunt because the DK is going to spike hard with 75% increased physical from Sartharion.

Again that is from what I've seen, it could be that I've just seen some terrible DKs and that they do fine tanking him after all the drakes are down.

We tried (again) last night without much luck. A lot of it comes down to people not dieing to void zones/adds but timing during the breaths seemed difficult too.

One thing I noticed is that I can never see the TT debuff. I even set up a MSBT alert but it never went off. I don't know if this is a bug or you're supposed to just assume it's always up after the disciple is spawned.

I'm going to suggest we drop down to 6 and 5 dps and see if that works better. Save BL for the second drake maybe then.

BLing on the first or the second drake doesn't really matter unless you can reliably get the first drake down before the second drake without a bloodlust. As long as they overlap at all, they essentially share one health pool (since you won't be killing the second one before the first one).

If you can't see the TT debuff for whatever reason, you must set up a cooldown rotation for the breaths. Otherwise you will die. The other option is to stop attacking entirely when Vesperon hits (turn off autoattacks too) and make sure to only attack when a breath is coming. Even then, I'd want to see the debuff get removed.

I guess that's because Grid only updates Debuffs in an intervall greater than the time TT actually is inactive.
For Sarthaion+3, I'm using a seperate group of Elkano's BuffBars with really big bars solely filtering my own debuffs, works fine.

Best and least-fussy way I've found to deal with debuffs on yourself is to install Buffalo. Move the debuff frame to above your character's head and enlarge by a little.
This way you can always see debuffs on your own character without having to look for them elsewhere in the UI. Also it's very fast to respond and I find it 100% reliable for attacking to remove TT before each Flame Breath hits.

Strange. Elkano's Buff Bars shows Torment just fine... If you have problems seeing the debuff, are you using any buff/debuff mods, or the default interface?

I don't think they stack, it just means that a larger buff won't remove the scroll buff. It's not particularly relevant for the stamina scrolls, since the stamina buffs are all longer than 30 min. The problem was with agi and str scrolls being overwritten by totems or Horn of Winter. The wording of the patch doesn't imply that they'll stack, just that they can coexist.