Pros: Very fine control. Love on/off switch to extend battery life. Feels solid.

Cons: Unfortunately 11 months in the mouse started double clicking when I single clicked. I verified by switching to another mouse -- no double click for days -- switched back, got double clicks within 60 seconds.

Overall Review: I liked the mouse so much even though it failed, I might consider buying another one.

Pros: If you are going to keep this enclosure on your desk, and have a need to quickly swap out one drive and place it with another, this is the unit for you because all you have to do is turn it off, yank out one drive, and insert the next.

Cons: If, on the other hand, you want to use the enclosure to copy files from one computer to another, this is a terrible choice because the drive is not inside the unit, held secure with any screws. It just sticks into the top kind of like a toaster. You could easily damage the drive by just elbowing the thing.