I personally like WarRock. It's quite fun to play and it's free.
It's not the best game in my opinion, but it's a good game to play on WoW maintenance day.
As of others:
Game View 101 thinks:
I really only use Game View 101 ( but only for mmo reviews.. if there's bigger source i use it instead ) and GameSpot.. But i saw some 4.5, 5.5, 7.0 reviews.
Now i wan't to know your opinion. And if you saw another reivew, post the link to it here!!!!