Conclusion:
I have several other small, portable mice that I use on a regular basis for my laptop and when testing or building systems. All of these were over twice the price of the Rosewill RM-8500 and none of them have a nano 2.4ghz receiver, selectable DPI settings and a complete set of back/forward buttons! There' no doubt that this little mouse offers great bang for your buck when it comes to features and great performance!

Pros:
For the price, I was really surprised with just how well it performed!
Being just slightly larger than most other notebook/portable mice, I found it fit my hand a lot more comfortably
Nano receiver size was great, very small!
2.4ghz gives you long range and uninterrupted use
Included carrying pouch is always a nice touch

Cons:
Side mounted back/forward buttons should be reversed
Manual misprint regarding DPI switching really needs to be fixed so other users don't miss this function!