So, I unpacked last night at home and set my computer back up only to find out that the left button on my G5 has stopped working, it was about time for an upgrade anyway as the wheel on that mouse is terrible.

Preferably I'd like something similar in size to the G5, I'm more of a palm user than a finger tip only user, so I don't mind something chunky.

I'll probably go for the MX518 as it's same shape and has great reviews, but I just thought i'd post in case somebody has any suggestions.