While I do really like Microsoft's keyboards, since I'm a Mac user, I prefer using Apple's keyboards. I use the wired keyboard only because the wireless keyboard doesn't have a number pad (what's up with that anyway, Apple?). My mouse (well a Logitech M570 trackball) is wireless, though. If Apple would make a wireless keyboard with a number pad, I'd buy it in an instant.
XBox 360 S, 16GB iPhone 4S, iPod Classic 160 GB, Dell Inspiron Mini 1018; Macs: Mac Mini 2.4 GHz 6 GB RAM; Macbook 2.0 GHz 3 GB RAM; MacBook Air 11", 24" Cinema Display