The Console Argument
Sales
If of course you are looking into sales (which I am not) then Wii comes out on top. However from my opinion (a person who has owned all of the Nintendo Consoles) this has been the worse console that Nintendo have ever made. The question to ask is why?
The major reason why is simply because they do not give a damn about all of the past fans that made them money before the Wii, the majority of new games are aimed at idiots and Nintendo fans rarely see the light of day. with Mario Kart on the Wii that just seemed to take out all of the things that made Double Dash A great game, it has sold because more kids will buy it. In all my time of playing Mario they have never used the same idea twice, what on earth is Mario Galaxy 2 all about?.
So as you can see the Wii is out of it.
Online and other
It cannot be said that the PS3 is a bad console with games such as Uncharted proving just how good the console can be. The online although it is free it is very poor and you always find yourself in a game with people unable to speak English. I still do not know why language filters are not in there? Is Blu-Ray the only decent thing going for the PS3.
The 360 has the best games, the best experience when playing and a really good online community. Do not get a Wii as although it is said to be for the entire family, the kids and you will get bored quickly. 360 or a PS3 is the way forward.
To make sure these will not have to be replaced for some serious money, get game console insurance or gadget insurance. Of course you could also get some mobile phone insurance while you are at it.