Originally posted by DREDIOCK
With 4 kids, you'll be wanting all 3
Trust me. Just get all three and save yourself 2 times the amount of cost in aggrivation
Unfortunately, this is probably the best piece of advice you could ever get.
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I have not played all three. I've only played the Wii. However, I've played the earlier versions of playstation and xbox and, assuming the next generations play out much as the latter, can give you some information.
Historically speaking, Xbox and Playstation have the same games, whereas Nintendo has its own lineup. This is great if you happen to prefer Nintendo games, or can't live without them, but is a downer if you want the "big name" games, that usually cannot be found for it.
However, with kids as young as yours, its far from certain you'd want your kids playing some of those "big name" games in the first place (Grand Theft Auto, for example). Of course, your kids will eventually grow up.
Still, if you're the sort of parent that doesn't really want their kids playing games like Grand Theft Auto until they're at least 16, then you might as well buy the Wii for a few reasons:
* By the time your kids are old enough that you let them/they really want the big kid games, there's probably going to be a better system out, or the PS3/Xbox360 will be a fraction of the price.
* In the meantime, the Wii will likely offer a wider range of games for all the age groups your children fall into. I'm not sure if you've ever tried to find kid friendly playstation or XBox games, but there (at least for the last generation) aren't anywhere near as many options as Nintendo offers.
* The Wii is going to keep the kids somewhat more active, as its much more of an interactive system, where you're usually standing up and moving around a little. It's not some great exercise program, and no substitute for running around outside, but it's definitely healthier than just sitting on the couch pressing buttons.
Just some thoughts,