I'm a big fan of Logitech's Anywhere Mouse MX - it has a dual mode scroll wheel, it tracks on glass, and it's just the right size to be both portable and useful. But it uses a tiny RF receiver that eats up one of the two slots on my MacBook Air, and there are (many) times when I'm forced to choose between connecting a modem or a mouse. All this would be solved if Logitech made a Bluetooth version, but they don't. The V470 doesn't work on glass (a too-common material for desks in hotel rooms) and... Read more →