During the course of the review we gamed, we photo retouched, we did everything possible to try and find fault with this unit. In the end we found that the MX1000 is now the best mouse I've ever used. The MX1000 is very response, accurate and is ultra smooth. Logitech took the MX700 - improved upon it's strengths and addressed its flaws creating what could arguably considered the best mouse in the world.