Wii cons:
1: Not many quality titles yet
2: 3rd Parties like to port a LOT
3: Many 3rd party games use the controller poorly
4: A lot of companies seem to be thinking wii is simply for casuals only.
5: No Hard drive
PS3 Pros:
1: Processing power
2: A main entry to the Final Fantasy series.
3: Blu-ray(good for the future if it does get adopted which it probably will.)
4: Hard drive!
5: Online play is out already.