I bought this mouse to use as my primary work mouse. It is a great mouse, and I really wanted to like it, but it didn't fit my hand. The side scroll wheel gives the mouse a rather sharp curve at the top. For whatever reason, that curve just didn't work for me. I then got the Logitech G502 X gaming mouse, which feels great, but it doesn't have the battery life needed for an all-day work mouse. Still, I am willing to deal with the shorter battery life for a mouse that fits my hand. I wish Logitech would make an MX Master mouse in the shape of the G502.