I just recently got the Logitech revolution vx and mx. both are VERY comfortable. but for a laptop I definitely recommend the vx cuz it's portable. the mx requires a charging base, so it's more desktop bound.
i'm 5'6" short and the vx fits near perfection, but a tad small for the mx which requires someone taller (which also has larger hands).
The vx is really the best mice i've used thus far. Not bulky, heavy, functional, etc. It could be had at Staples for $50 if u can find a $10 off $30 purchase. Logitech retails that mouse at $80.