What an excellent idea this mouse is. You can customise the fit to your hand size and vary the placement of your thumb and the tilt angle on different days so you don't get overuse injuries. The instructions are minimal but it's intuitive to set up. I had to try a few times to change the middle button function. There are no instructions in the box for this that actually work, nor on the website. But you can change the function if you download and install a driver from the website. However I've found this change doesn't "stick" and you have to reapply it if you switch between cable and wireless. Annoying but a small thing. Overall a great...view more

Almost a perfect mouse! The only weak point is the driver. It took me a whole day to figure out that all the 6 buttons could only be programmed in the wired mode with the driver 2.3.2986n (Beta) which is only available on the UK Contour website. The drivers of other versions always display "no device connected". In the wireless mode only the middle button could be programmed.