I am coding for living.I need to spend at least 8 hours per day in front of computer. That is not good for my shoulders and my back, I always got some pains from my shoulders and my back. Thus , a good mouse is very important for me, it can take some pressure from my shoulder. Recently, I bought a good mouse which is Logitech M560 Wireless Mouse. The mouse is very sensitive. Its curved shape is fitted my palm grip. That is quite comfortable!