<< Viper, is there much improvement with the dual eyes vs. just one. Also, is the mouse very confortable, looks kind of bulky. >>
I upgraded from a Logitech Optical to this, & so far I've been happy with it. It does seem to be more accurate (one big indicator is when you pick it up it doesn't jump all over the place NEARLY as bad as the original did). It is also more bulky, the first time I touched it in the store I thought "My God, it's huge!" It's definitely not as small & light as the original, but I've gotten used to it fine.
Viper GTS