I would NOT buy a Wii now. The Wii U is said to be backward comparable and just on the off chance that the video output is better and/or Nintendo decides to offer HD redux's of their best games is a good enough reason, IMO, to wait.
Skyward sword is the hardest game I've ever played. Not because of the difficulty level but because the game is so fun and yet SO ugly to look at. I imagine it'd be like sleeping with a really cool ugly chick-- sure her personality is great and she's always a fun time but DAMN if looking at her isn't a cold shower if-you-know-what-I-mean.
Now, if Nintendo gives her a little nip here and a little tuck there... Ooh baby!
What to do if you find yourself stuck with no hope of rescue:
Consider yourself lucky that life has been good to you so far. Alternatively, if life hasn't been good to you so far, which given your present circumstances seems to be more likely, consider yourself lucky that it won't be troubling you much longer...
-- Excerpt from the Hitchhiker's Guide to the Galaxy.