Average I've had this mouse for about two years now. The first year was great--it functioned perfectly and was a vast improvement on my previous rollerball mouse. Unfortunately, it has developed several defects since then. The left button has taken to double clicking at random intervals, causing serious problems and making it almost impossible to use. It also jumps around the screen often. It's a cheap mouse and is great when it works, but don't expect it to last long.
Good Having read the reviews from other buyers I feel lucky. Have had my Trust Ami Mouse 250s for about 3months now and *fingers crossed* it has been perfect! Scroll funtion and buttons still work. I use it with a mouse mat mostly but works fine for me without.
Would be fine if it worked After a week the left-click button packed up. Within another couple of weeks the whole device failed. Rubbish, as was customer support from Trust (of the 'have you turned it off and on again' variety). I guess you get what you pay for, and this is cheap for a reason...
reasonable needs to be on a diffuse surface to work properly. otherwise it just leaps around everywhere...
