Originally posted by Que Lynn
Well if you buy either one unmodified (meaning in the condition their respective manufacturers want you to buy them as), they are currently at par with each other, which is a little less than 400 dollars (abt 380-390, I think).
In terms of "advance-ness", I think it's a fairly relative term for console gamers. Being "more advanced" can also mean having a wider array of excellent games to choose from! A console you own may be technically the best right now, but if you can't play the games that you want on it, then it doesn't mean anything.
And just because a console was released a few years back, doesn't mean that it isn't going strong and just as popular now. Console boxes' lifetimes are different from PCs, in that respect. They do drop in price, yes, but not as drastically in such a short period of time.
In a way, it's the games (and game-makers) that somewhat control the market. So if you find yourself wanting more of the games developed for a certain platform, then you should go for that one.