I ' ve been using a Rival 500 for a few weeks now , and I think it ' s a very good mouse , for what it is . Obviously , if you want or prefer a smaller , more performance oriented mouse , it ' s not going to fit that bill with the wide grip , hard area for your thumb , and heavy weight . Though if you want the extra buttonsfeatures and want as much performance as possible in that category , I think it ' s a winner . The build quality is pretty amazing on it as well , no rattles for me either , and the buttons feel great . I only feel that the thumb area is a tad too cluttered though I think it will really depend on the sizeshape of your thumb , to see how well you can use the buttons . Ultimately , I ' m selling mine to a friend who prefers widergrip mice , as I picked up a cheap Revel for $ 30 , and it ' s a great performance mouse .