I've never really been into video games, so I need some advice. I have two young sons, ages 4 and 6, who want a console for Christmas. For those in the know, which console would you recommend for young children? I don't mind spending the money, but I don't want to get a system that's way over their head. Is the wii a good choice? I like the idea that it has games where they move around a little. Thoughts? Thanks in advance.