I think the Tales series is vastly enjoyable! That said, I don't have too many of the games. Or maybe I do?
It all started with Tales of Destiny on the PSone. Still my favorite Tales game personally, for a certain Rutee Katrea. And the Swordians especially. And music. Gah, the whole game!
Despite having that and loving it, I never got ToD II(which is apparently not the real ToD II, so I'm not too concerned.) I've tried Tales of Phantasia, it's alll good as well. More recently, I have Tales of Vesperia, which I still need to finish. I bought Tales of Symphonia for the Gamecube last year. I got Tales of the Abyss 3DS last month, and we have Tales of Graces f has shipped from Amazon. Also just found Tales of Legendia in our local Gamestop for cheap, and I have the PSP cross-over game which looks like a lot of fun. I think I also just ordered the Wii Tales of Symphonia(Dawn of the New World) game.
I dunno how many of the games have been officially released here, but I guess I have a decent amount of them! ToD is still my favorite, though.

Wish the PS2 remake would've come out here. Or the proper sequel on the PS2 for that matter!