i got the missus a wii last xmas.....never been used since :P
i've had a 360 the last few years, it's had a few trips for repair but the new arcade units have a much better chipset - as far as i know, the elites still have the dodgy chipset. Don't buy it based on the racing games though, Forza Motorsport 2 was awesome and I had a good group of mates online that used to cane it round the 'ring with me regularly. However, the developers fucked up Forza 3 and everyone is migrating to the PS3 ready for Gran Turismo 5. It's more expensive but think of it like a 2-in-1, you get a blu-ray player, kids get a games console
