Wii, Xbox 360 Or PS3?
Sales
If you are basing it on sales alone then it has to be the Wii that gets the prize. From the opiniopn of someone that has owned all of Nintendo’s past consoles this has easily been their worst submission. 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. Mario Kart Wii was at best disappointing as they seemed to take out everything that made Double Dash good. Mario Galaxy 2, nice one Nintendo, lets copy your previous ideas.
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. However, online, although free, is slow, poor and features many people who cannot even speak English within it. I still do not know why language filters are not in there? Sure the PS3 has Blu-Ray but that seems to be all that it has going for it.
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. Get a 360 or PS3.
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.