As I said in the Natal thread, if there's a highly appealing game and the overall cost is low enough, then yes. However, both those conditions are unlikely so even though I voted "wait and see" in that thread, I'm voting "no" on this.

(360 Arcade + Natal + game will probably be a good deal cheaper than PS3 + Eye + Wand(s) + game).

Yes I expect good games for it and hope that RE5 will be like RE4 on the Wii. But if the DS3 in one hand method will be the final method then probably not. It all depends on the informations we get the next months.

If Sony can convince me with some interesting games and arc+eye doesn't cost to much then maybe.

Nope, If I wanted waggle, I would get a Wii, and since I plan on getting a Wii in the future, there's no point in getting an Arc.

No because I hate motion controls.

If Sony can bring some good games and if the Arc isn't too pricey, then I may get it.

But it really does comes down to the games.

I'm not really convinced yet, but I'm also not really turned off by it either. It's nothing particularly new so it doesn't really have that going for it with me, I'll just wait to see what type of games it has.

If it's just Wii games in HD, I'll pass.

Well, I am buying a new Wii soon, and I am also getting my motion sensing fix with natal so... no

If there are good games that support it then yes.

Nope.