What are the special features of the mouse? I used one in an apple store yesterday (NextByte actually - I'm in Oz). It was pretty good and definitely better than the mighty mouse. Movement was precise, but it did not always feel comfortable in my hand. Part of that may be familiarity with the old. I had a little trouble getting the two-finger scroll to work. Having Star Trek fingers - you know, the V thing, will help. I'm looking forward to more gestures in the future - mind you, I've been looking forward to the same on my MBA….
Hope this means 10.6.2 is on the horizon.