Which MMO do you prefer?

[MRKs]

I don't usually play MMO, but a couple of years ago I played Trickster Online, it was a really addictive game until the company who owns the game broke the gameplay and the classes (One class was so powerful that everybody was making characters with that class) also the pvp was horrible the worst people where there.
But I don't play it anymore, the only game I play from time to time is S4 League, a shooter with an anime style and you jump and do stuff. It's funny and kind of casual