If your kids are less than their early teens, I would go with a Wii all the way. All the accessories w/ PS3 and XBOX 360 are really geared toward high end gamers and younger kids don't mind the graphics quality...they want fun. Wii has a better selection of games that appeal to younger gamers. I find I can play more with my kids using the Wii versus intricate button combinations on PS3 / XBOX 360 games.

My kids want to download old Nintendo titles off the internet versus buying the latest game on a PS3 or XBOX 360.