Personally, I recommend Skies of Arcadia above Tales. Just a fantastic game - despite the fact that the battling is MUCH less fun than Tales, the whole game is exciting with a great, fun, and at times moving plot, fantastic characters, the world is really vibrant and HUGE and really ... I don't know, it's just great. And the music is fantastic as well.
Tales has wonderful graphics, and the plot is fairly interesting, but the dialogue and the way it's portrayed really cheapen the experience. Battling is of course awesome - it's the kind of game that's fun to play more than once because battling is not a chore, it's actually enjoyable. Overall, it's not up to par with Skies... Skies is just unbeatable, really. My favorite RPG - above Chrono Trigger and FF6.
Oh yeah, and I have a Tales of Symphonia question, seeing as the topic has come up:
How do you get costumes? I didn't get any on my first play-through, so I want to get the costumes on my second (it's fairly nice having 2x EXP, so I don't need to worry too much about leveling - more time for sidequests). Are they just Titles that are accompanied by appearance changes, or what?
The Tales of Symphonia system is extremely deep - I feel like I'm missing something all the time. For example, I never cook - I barely have any recipes. And the only combination attack I know how to use so far is Photon Tempest... or Ray Storm later on.