Ditto on Mr. Blue.
Also, do PCs have mouse tracking acceleration now? They didn't back when I used them but I think you could add it through third party drivers, not sure.
Cordless keyboards work good. I'm always knocking mine on the floor and breaking it or killing it by spilling something on it so I tend to buy the cheap Apple keyboards since I do like the way the keys feel on them.
Input devices are a very personal choice. I really don't get some Mac users who love Apple's one button mouse, but most of the designers seem to love them.
This is what I use for a mouse,
Kensington Iridio. I seem to wear them out after about nine months so I just keep on buying new ones. I like Kensington mice mostly because of their drivers. Their drivers allow assigning keystrokes to the buttons and cording the buttons. Also you can really tweak the mouse tracking acceleration.