Expanding on my reply above....
I am being evaluated as a MT (hate that term) for our 2nd Naxx group. I don't know what that means, "evaluated", but I hope it does not involve a prostate exam.
If they ask me to do it, I will for the good of the guild and progression reasons. The sooner we get two groups farming 10 man Naxx the sooner we can progress to 25 mans.
So with all that hot air out of the way, I am convinced Unholy and Frost are playing ball in the same league. Blood is a bit behind and hopefully the patch will remedy things there. For the sake of conversation, between Frost and Unholy which will allow me to be a better MT? I am looking at TPS, DPS avoidance Mit etc. There are soooo many arguments for and against each that it is a bit daunting to find solid info anymore.
I am leaning towards Frost as AMZ, squishy pets and AOE dmg boost talents will do me little good while eating Hateful Strikes or inspecting Sapphiron's molars for cavities. I am just not sure how well Frost fairs in the TPS department. Anyone else pulling the primary tanking duties who can shell out some advice?