Well according to the last WrathCalc, Lightning Rod(N) or (H) is the best 2nd choice respectively after DWT, swapping some normal gear according to it, T13 increases our DPS by around 3k over T12H with DWT, looks the higher intellect plays a better roll over the subpar bonuses. I will test it more live once I complete my set with non LFR items, my moonkin is still my alt.

[Rathrak, the Poisonous Mind] with ultraxion offhand provides the most int for normal modes, and the dagger proc scales with solar eclipse which makes it pretty good for fights like yor'sahj where multiple adds are stacked up. when i used the dagger, it made up about 2% of my overall dps on single target fights. Those are just my comments on the dagger, since I haven't seen it being discussed much on here.

If anyone cares, I've been playing with 3 bis lists for moonkins with and w/out legendary.
The bis list i was creating for a non-legendary moonkin looked something like this if anyone is interested.

chardev 9

^Pretty much just going for highest int possible without 3102 breakpoint.

3102 breakpoint w/out legendary looked something like this

chardev 9

3102 breakpoint with legendary
chardev 9

^Downside, lot less int. Upside, legendary proc with a tiny bit more mastery. If you don't care for breakpoint, just switch boots to heroic treads of sordid screams and reforge as necessary.

Just offering these lists up for discussion. Please feel free to comment. I just put insignia in as a defacto trinket, but really insignia and cunning of the cruel are very close anyways.

You can replace the bracers with the heroic morchok ones in the 3101 bp one with the legendary and still make the breakpoint it seems.

Crafted bracers are more int and haste with epic gems in them.

I had this brought up to me a while back as well, and I think I covered it on page 2:

[Balance] Cataclysm 4.3 (Dragon Soul)

Even with the extra int (which is only 5 Int btw), it can't match up to the loads of mastery gained. It's 134 Mastery vs. 71 Haste + 5 Int, but play that as you will. WrathCalcs gives a bigger number with Mycosynth, so I'm sticking with them :p.

With mycosynth plugged into the bis list 3102 bp with legendary, with optimal reforging i was only getting to 3099 haste. Granted that's only 3 less (and you can always throw in another orange gem at the cost of even more int) and people speaking of breakpoints as an approximate number and not an absolute, decide for yourself if you want to be over or under. The crafted bracers are just a very nice item to reach the breakpoint without really giving up anything other than some mastery which is still weaker than haste past breakpoints.

Without the legendary, you're ~52 haste short of the bp with optimal reforging so you'd have to throw in a couple of oranges.

I'd personally agree to wear mycosynth in the bis int set (the first chardev i posted) since that's pretty much just a "wear highest ilvl to get more stats (specifically int)" set anyways.

If I was without a legendary and going for bp, I'd personally stick with crafted bracers.

Quick question if someone can help me - does the 2T13 damage bonus check for IS being present on the target when the cast finishes or when the spell hits the target?

After some testing on the dummies, it seems that it checks for IS when the cast finishes. Keeping E&M up on the dummy at all times and unequipping the weapon (to remove Power Torrent procs), I performed these tests:

- Casting a Wrath, then applying IS while the Wrath is on the air -> unbuffed
- Casting a Wrath so that the cast finishes while IS is up, but the Wrath lands after IS expires -> buffed

For those of you interested in all the breakpoints I would suggest to use following spreadsheet:
googledocs

Thank you Tuscarora, that's the assumption I was working on with my refreshes so I shall continue forthwith. Thank you for confiriming it though.

I've had quite some trouble with Rawr lately as well, it kept claiming mastery is better than haste. Now i'm near 2776 haste breakpoint and it wants me to put int+haste gems in to reach it. Which does make a bit more sense i guess, although it depends massively on the fight you want your max dps on. Whether you'll be casting your DoTs outside NG or not.

Currently we're progressing on Spine 10hc and it's high chances Tendon burst is an issue. I've read a few things about it, some recommend mastery, others the typical route of haste.
I was placing my bets on haste, but lately i've been thinking whether mastery wouldn't be the better choice, especially if considering 4t13 updated bonus of +10% Starsurge damage.

Basically, you idle 10-15 energy before Solar. As Amalgamation is about to go down, you DoT the high HP bloods to have as many rolling as you can. Tendon appears, you starfire to apply E&M, reach Solar, pop trinkets/Synapse springs, explode shrooms, DoT IS+SF. By that time you should already have a Starsurge proc and you're very likely to get at least 2 or 3 more while still in eclipse due to all the noneclipsed dots ticking on the bloods.

In this scenario, haste surely must be the underdog compared to mastery, since a third or so of your casts will be instant. The t13 bonus also gets to shine, whereas both t12 are either completely (4p) or nearly(2p) useless.