Brendon is like a phony and cheap version of Jeff last season and Rachel is just awful.
Game-wise (from the shows so far and reading backlogs of the live feeds) my favorites are Matt and Lane at this point. Matt's got a good head on his shoulders strategy-wise so he could make some great moves as the game progresses, whereas Lane has said he's playing under the radar and trying to keep targets bigger than himself in the house, so he seems to have at least some idea of what he's doing unlike some of the houseguests who will surely stumble their way into the latter portion of the game.
Character/entertainment-wise I'd go with Matt, Ragan, and because he's such a mismatch with the rest of the house, Andrew.