I had a Wii and after the first two weeks I got bored. There are not many good games for Wii, now I'd definitely buy a PS3. What's better than a FullHD TV + PS3 + Gran Turismo 5 (or if you don't like racing games GTA IV)
Ps3 is better if youre more serious about gaming, but if you want a bit of light fun with friends coming over a wii might be a bit more involving than call of duty etc
omg PS3 hands down. If you don't care about titles like NFS and CoD (although black ops is on the wii, it's stripped down here and there), get the Wii. The Wii doesn't have voice chat (they're canceling the Wii Speak venture after just a couple of months). PS3 > Wii
The pros for the Wii have been diminished with the release of the PS3 Move but it's not exactly cheap - but if you're playing it with your kid then the Wii is probably the best way to go.
None, Microsoft Kinect was chosen as the best one at the moment, even by hardcore "must-use-complicated-controllers" gamers. If you had to choose from one of those 2, then go for PS3 because it offers much more than Wii. Wii was great, and it needs a serious retouch now. You can check some articles about PS3 and Kinect (Project Natal) on our website (although the articles were actual when those two started to emerge).
I am a little lazy so i prefer to have the playstation. I dont like to move around the house when i play. ) But it is your choice
They are so different that they cannot be compared. I would personally choose the ps because of the gaming quality.