5 Best mouse i've ever usedsteviewanders | 02/02/2013 | See all steviewanders's reviews (4)The mouse is well built, comfortable and responsive. The extra buttons are very useful and generally well placed so you can easily reach them. The batteries only last for a day or two but as long as you keep charging them it shouldn't be a problem. I have four spare batteries and just charge them separately so i can always use the mouse in wireless mode. If you keep the usb receiver near the mouse then there shouldn't be any problems. When i put the receiver in the back of my PC there were problems with responsiveness but this isn't an issue with appropriate placement. My only real gripe is that the plastic on the top of the mouse is very prone to sweaty hand prints. I do perhaps have clammy hands though. Overall, this is a very good mouse. The best i've ever used. If it ever breaks i will be very likely to just buy another one to replace it.