Bests & Worsts Reviews from Amazon

I used Logitech V220 Cordless Optical Mouse for Notebooks (Dark Silver), which worked great. But I have big hands, so I wanted a full-size mouse. This mouse is much more comfortable for my hands, but what I don't like is that is not as precise as my previous mouse (being this laser, which is supposedly to be better than optical). For example, it's very hard to make the cursor mouse goes steady in one direction (with the Logitech V220 I could do it without problems). I made an example in PAINT (img138.imageshack.us/img138/5747/63930316.jpg). You can see how the accuracy is very bad in the Logitech M510 compared to the Logitech V220 Cordless Optical Mouse for Notebooks (Dark Silver) on the same surface (light brown desk). Maybe with a mousepad it becomes precise, but I haven't tried it yet because I don't have one.