Yeah, I've been thinking of getting one too, although I find the menu navigation rather dumbfounding. >.<
Personally, I'd rather have a Wii (which I have), mostly because it has all the games I like (Zelda, Mario...etc.) I'm not really into online gaming (mainly because of all the snot-nosed n00bs that disconnect if they're about to lose and call you stupid for no reason.) And, Graphics. Woo...Graphics, I don't care if a game looks bad, the storyline and features is what's important to me. I liked ruby/sapphire because it had one of the coolest stories ever, even though the tiles weren't that great.
I have played a 360 before, and the controller felt wierd to me. Plus, I don't really like Halo and all that. And half the games for the 360 are sports and crap like that. (Yes, I know I'm exxagerating, but to me it sure seems like it.)
Although I wouldn't mind playing Tales of Vesparia, but shelling out $470 for a console and the game is ridiculous.