Sales
If you are looking into sales alone then the Wii outsells everything. From the opiniopn of someone that has owned all of Nintendo’s past consoles this has easily been their worst submission. Why on earth is this?
Well the simple reason is that they have stopped caring about all of the Die hard fans and started to generalise their games for the general market which means we are constantly seeing rubbish games in which a Nintendo fan wouldn’t touch with a 10ft barge pole. Mario Kart Wii was at best disappointing as they seemed to take out everything that made Double Dash good. In all my time of playing Mario they have never used the same idea twice, what on earth is Mario Galaxy 2 all about?.
The Wii (in my opinion) is certainly out of it already.
Online and other
The PS3 is a good console there is no doubt about that and games such as uncharted 2 show just how far the console can go. 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 do not understan why they did not add language filters? Is Blu-Ray the only decent thing going for the PS3.
The Xbox 360 has the better games, the better online service and just a generally better experience overall. Do not get a Wii as although it is said to be for the entire family, the kids and you will get bored quickly. Getting a 360 or a PS3 is wise.
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.