This is actually a tough decision, I'm gonna just list some things I think about the possible commentators though.
9.95 Sorry, just doesn't understand the game enough or seem to have the energy for hype commentary for something like MLG.
Pig Of The Hut Seemed to biased to me, but presents himself in a professional manner and unquestionably can get hyped up over a match.
Medina4life Very solid, wouldn't mind seeing him commentate. Seems to know what he is talking about and energy doesn't seem to be a problem even at hour 12 of a 13 hour stream.
Tom Brady A roll of the dice basically, He knows so much about the game and is capable of unbiased commentary but he is a drama queen and sometimes you get shit like "Maaaaaan, Raiden is sooo good the input bug doesn't affect him, I could get a 1,000 and just shake it off." I say if Brady commentates he shouldn't be playing in the tournament.
Hitoshura Very good, just don't like the idea of hearing "Jello ball, onion rings, squirtlesquirtlesquirtle" over top 8. Sure he could work on that for MLG and he would be fine.
Just my 2 cents.