Well there's Popjustice, BuzzJack and ChartsInFrance for the most part. The first is a bit... childish and aggressive (as well as very pop centric - don't know if that's your thing) but it's very busy so it's probably the best. BuzzJack is quieter, has more of an indie community (as well as a very good song contest) and the people are generally more fun, but it's a bit more of a chart forum than anything else and the music part of the site isn't overly active. ChartsInFrance is French so presumably not the place for you, haha!
Oh well that was just me being lazy more than anything else, the current name is a tad longer than is necessary I think. I'll wait and see what the "heated" debates are like but for now, I'm enjoying it! I guess it's only natural that so many avoid the place anyway - most of the memberbase is surely made up of teenage Pokémon fans and I don't think they generally overlap with the sort of people you're likely to find in OC&D!