"Better than any mouse I have used"5.0 starson by HowardZinnn
Pros: Great ergonomics, low profile, easy setup, multi-touch gestures are great
Cons: Could have been a bit cheaper, but hey it's Apple.
Summary: Once setup properly (tap to click, 2 finger for right click, and using 3 and 4 finger gestures) this device is incredible. I love using 4 fingers for expose and for clearing my desktop, 3 finger dragging is very useful.
I find this faster to work on than a mouse. I am very surprised the CNET reviewer didn't mention how useful those 3-4 finger movements are. This is not a 3.5 star device guys, it's superior to a mouse. just make sure you configure the advanced features in the software.