Best Online Multiplayer Games for PS3 (especially sports titles)?

What do you guys consider the most enjoyable online multiplayer games on the PS3 console to date, and what sports titles are the most fun to play online?

the best in my opinion is rainbow six vegas it just offers so much online content. the best in terms of technically is resistence. rainbow six runs very well online but the lobby system in resistence and setting up games and the level of detail you have ofer matches is a step beyond.

plus ive almost never seen any lag unlike cod4 or server issues plus its got global servers plus big online matches. i don't like the game personally but on a technical stand point its really very good.

the only sports games i have are fifa and skate and both lag online. specially skate. fifa has most of its lagging problems with 5 on 5 matches. also fifa has occasion frame hiccup though they are very rare and a major problem with the crowd rendering.