I like rift but can't quite get into the story.
I currently play wow although not as much as my guild would like I'm sure.
I tried TERA at launch liked the combat but hard for me to get into the story, like rift. This is one game I might play as F2P.
Play SW:TOR as a star wars fanboy I don't think I could make myself hate this game.
These are the only ones I have even tried. I have not seen a F2P game that has interested me. Although you could call SW:TOR and TERA F2P now. I doubt I would have looked at tera if it was released F2P
Sorry for the off-topic. As I said in another post, it could just be my bias against F2P.