Well, I disagree on the keyboard. I've got a mac mini as a media pc and a wireless keyboard that has had the same batteries for the last 3 or 4 months. It is exactly the same to type on as the full sized wired keyboard.
The (wired) mouse I also like, with the exception of the ball rollers having needed to be cleaned this week after 9 months of heavy use. I'd have taken in to a mac store and got a replacement, but for the fact I'm living in Gran Canaria where there isn't one. It was in fact pretty easy to clean and is now good as new. In use I particularly like being able to scroll sideways and would miss it if I moved to another mouse.