I am not sure of this is worth the money. It probably is but did not quite provide the extra difference a premium mouse should offer. There is nothing wrong with it; more nothing especially right with it. The fact that it is better than OK probably means I am being fussy. The battery hatch is a little fiddly to open and close, but it is a good mouse, perhaps not a great mouse!
I like the touch, sensitivity, size and most of the features on this mouse. However, the scroll wheel is a nightmare. You can not really have good control by using the scroll wheel which is too light and smooth. Sometimes you might have trouble scroll to the right position you need. If you dont use the scroll wheel very often, this mouse is a good option.