Handspring made its early mark with a better Palm PDA that incorporated an innovative slot for removable add-in devices. These days, the company (which looks to become part of Palm this fall) has hitched its wagon to smart-phone and PDA combinations, focusing primarily on the Treo line.

The Treo 270 and 300 have been out for a while, and competing models we're seeing are lighter, less bulky, and sleeker. At the CeBIT trade show in New York last week, Handspring rolled out its much-anticipated follow-up, the Treo 600. The smart phone we saw improves on the original in almost every way, adding a camera and a brighter screen, and dispensing with the flip-up cover. It made such a splash at the show that PC Magazine and eWEEK named Handspring's entry Best of Show for Mobile and Wireless Devices.