Here is the thread I made the other week with some responses:
http://www.mmo-champion.com/threads/...r-resto-shaman
Personally I am not in a top guild, but I like to min/max. From a Resto perspective i concluded if i want an extra tick on HTT go Troll, if I want to reduce the amount of haste to reach haste caps by go Goblin (3764 non goblin, 3306 goblin for 2 ticks of HST & 1 extra tick of HTT) and I kinda ruled out the other races and went troll as i saw the extra tick as the most valuable
Obviously other people may disagree etc, but I am happy with my choice.
Would help if you detailed which spec you will be playing, 10/25 man, do you also play your OS a lot during raiding etc.