I'm looking for a wireless mouse. I may "settle" on Apple's new Bluetooth mouse but I'd like 2 or more buttons and a scroll wheel (why, Apple, why?) Looks like Logitech, M$ and Kensington are my only choices. Are there any other wireless mice out there worth considering? Also, is there any big reason to go Bluetooth vs. RF? I can't seem to find a mouse that matches the iMac's style--these all seem to be black and "space-aged". Are there any simple designs out ther?