The Wii seems more next gen to me than the other two. Blu ray is just a big f**k off DVD and all the other two offer are good graphics yet the same old style of play.
The Wii has brought something new to the table with the way you can control games. Surely that's more next gen than improving the way a game looks?
Graphics dont mean a fat lot anyway, you seen see through that. Look at the Grand Theft Auto series, none have had great graphics but all have been so playable and fun. Final Fantasy 7? Dated graphics but still probably the best FF game. Mario Kart 64, Goldeneye, Perfect Dark etc etc etc
Plus you cant knock the price.