Summary: Pros: - Its pseudo-rubbery matt feel is nice in the hand. - The body is symmetrical, so if you don't use the extra buttons 4&5, which are both on the same side, both left & right handed folks can use it. (This is a key requirement for me: I mouse with both hands, using 3 buttons only, to reduce RSI). - Works out of the box with Vista. - Realiable hardware. Cons: - The receiver LED is incredibly bright! It lights up the whole room in the evening.
Summary: Its comfortable and solid to use. I like the off switch on the base. I only give it 2 stars because 1) The LED on the dongle is far too bright and flashes with all mouse activity. 2) After about 5 mins of none use it appears to go to sleep, which I personally don't like and was unaware of because it's not mentioned as a feature on the packaging. It then takes too long to wake up again.