Pros:Small, compact, precise and accurate. Plug & play, no software to install.
Cons:Could actually be too small for those with real large hands.
Based upon the reviews I read here, I went out and bought one at Office Depot. On sale for $14.95 with a $5.00 rebate brings it down to $9.95. So far it is very accurate and precise. Why spend $20-$30 more, when this does it all well.