New mouse
I have g5 but with an old mousepad , so if you buy one of those, it will need a good mousepad to saticefie it. I have a shitty mousepad and the pointer vibrates through the screen alot.
Zenus is right about the pad :!:
So, you'd better to buy G5 + SteelPad. I have QPad only because here in Estonia Steel ones don't in a selling
Anyway, QPads are also good. I'm not having any problems with mine
Regards
better than XM518 is razer diamondback. In combination with good mouse pad its one of the best optical mouses ever. Razer has specify ergonomy. Its good for moving with mouse by fingers, not fullhand as logitech
I got a MX518 recently and I really like it. The store was clearing it out at $20 canadian. Maybe you could find something like that too since it's a pretty old model.