Best Console For the Kids This Holiday?

First time accepted submitter undulato writes"I've got an aging, fat PS3 with only a couple of games that I still play on it but three kids under 9 who love Skylanders, iPet, Lego whatever etc. We all watch movies on it and it has been pretty much the centre of our entertainment world for a few years now. I've already got a spare HDMI monitor we could use for a screen so my question is — should we go for a new console this Christmas? Just buy another controller or two and a new game or two for PS3 and be done? Or get the still pretty viable Xbox 360, or even plump for a cheap Wii or even a Wii U if we're feeling flush. What do you think?"