Apple's Mighty Mouse Updated
Meet the mouse that reinvented the wheel.
Verdict thus far: Effortless to use. The interesting thing about the scroll ball versus a scroll wheel is that you can change or actually accelerate the rate at which you scroll. So I can scroll faster or slower, while any scroll wheel I've used has had a predefined scroll rate, sure you can just roll it faster, but it doesn't feel the same.
Update:
I agree somewhat with complaints that the squeeze buttons are a bit too far toward the front of the mouse. By default I grab just to the back of buttons, so I do need to move them forward a bit to use the squeeze. I can understand that Apple wanted them in the same spot from the Pro mice. I don't mind the lack of feedback, it works as I would expect. Perhaps if it required even less pressure.
It gets points for impressing my coworkers.
My config as follows:
Left side = Primary Button
Right side = Secondary Button
Scroll Ball button = Expose - All Windows
Squeeze - Dashboard
Developing...