We don't have Toy Story Mania . . . yet. How would you rate it from 1 to 5 stars with 5 being the best?
Best deals I've heard for Wii is they are FINALLY dropping the price and you should be able to pick one up this season for 199.00 vs. the previous several years of 249.00 which were NEVER discounted unless you count a bundle package at Costco, Sam's or maybe Wal-Mart but still not much and could be a game you don't even want in the bundle.
I hope the availability is there for you this year IF you decide to buy. In 2007, I believe I wound up buying 7 or 8 of them for friends, family and people on message boards that couldn't find them. I did this until I ran out of big enough boxes to ship them in.

I felt really bad for people, especially those that work 9-5 or whatever, and couldn't find them because all the eBayer's snatched them up (nothing wrong with American free enterprise . . . ) so it was my small way of helping several families Christmas give that much wanted Wii from Santa. One guy from husbands work wanted one, another lady wanted one for her college aged son who's roommate already had one . . . this was my last Wii and of course the guy with three young kids got dibs on it.

p.s. we took ours to VA this summer when we visited my husband's parents and they bought one after we left. They mainly do Wii Fit but at least it is getting them up and exercising.