I play when I can. But I generally play 4.0. Just because in 3.5 all the melee (minus rogues and expansion book classes) were strait forward and not very interesting. You rolled a d20 and you hit or missed. Sorcerors/Mages could flip gravity, throw things around with telekinesis, create wards, create translations with magic and so on with many skills that could be utilised out of combat as well. In 4.0 at least, I can go for a big swing on my barbarian that lets everyone get an easy shot in on me or skills that let me throw enemies around. Sorry about going off the topic but that's always bugged me about 3.5.