Microsoft Mobile Memory Mouse 8000

Microsoft's new Mobile Memory Mouse 8000 is a well-designed, full-featured, and-at $100-expensive input device. This wireless mouse worked great on all desktop surfaces; it even worked on rough or unusual surfaces such as glass and the keys of a keyboard.

Powered by a rechargeable nickel-metal hydride battery, it can charge through a small cable that latches magnetically from the mouse to a 2.4-GHz USB receiver that also doubles as a 1GB flash drive. (You can connect the mouse via Bluetooth, too.)

Business travelers will appreciate the flexibility this mouse offers; other people will find its price too high.

--Greg Adler