On topic, even if it might be outdated by now: I used to drift mostly A-/S-Class Cars. This doesn't necessarily mean that they had tons of power, just the Handling and Drivetrain Upgrades caused these "high" classes. On the other hand there were people in B-Class Cars with close to 800hp,
positive front camber and slick tires. Going against those people in the online lobbies hunting for points really isn't fun. Especially since some of them take things way to seriously. The "real" community would be the Driftlounge on FM.Net. It's died out a bit, but they've still got Grassroots Competitions, Team Battles and all sorts of Drift related activities going. That's were i made some new friends and had private sessions, which is way more fun than public lobbies