Favourite: IGN. They write the longest and most in depth reviews, give all games in all genres on ALL consoles a chance, their review is up before anyone else's, they have more features, and they give fair scores.
Least favourite: Edge. No, I don't like their "5 is average" system, but that's besides the point. The only PS3 game to get 9+ from Edge is LittleBigPlanet. ONE game. The 360 has several.
Other least favourites: Variety, because they don't even write reviews, they make comments, and then Metacritic assigns a score to those comments...
Teletext Gamecentral: Need I say anything?
IGN AU: They nitpick over the stupidest things, and they said Mirror's Edge was better than MGS4 (in the top 10 of 2008 list)