Rockstar: When people make a big fuss over a game just because it's from these guys I split my gut laughing. GTA deserves accolades and such, but when Rockstar announces a new game it is NOT the same as, say EAD or Kojima doing that, sorry. This is because 70% of the time when Rockstar announces something we know it will suck. Yes, suck, aside from GTA and a few others.
Bioware: These guys are fairly consistent, but I don't think they have as appealing of a console RPG approach as, say, Squeenix...and they have that PC game genericness happening with their art direction. Imo, Kotor and Jade Empire were over rated.
Bungie: Yeah, Halo rocks. But lets not blow this game out of proportion. I mean, there's not much interaction with the environment. I think some God of War style puzzles and adventuring would make this a game that lived up to the hype, but otherwise it's all about shooting everything that moves. Original.
Otoh, I think right now Rare is way under rated. People have bashed them for so long and I bet when PDO ships it will look a LOT better, because when people first saw the Conker's remake it didn't look so hot, and now it looks better than most XBOX360 games. If PDO gets that treatment we'll have a treat of a game!