From the CNET review of the new Windows ,Mobile-based Palm Treo 700w:
The good: The Treo 700w runs Windows Mobile 5 and sports the same great, compact form factor as the Treo 650. This smart phone also comes with Bluetooth, a 1.3-megapixel camera, and EV-DO support.
The bad: Unfortunately, the Treo 700w doesn't include integrated Wi-Fi and has a somewhat poor 240x240-pixel resolution.
The bottom line: The Treo 700w brings Windows Mobile and a number of useful features--such as push e-mail and photo speed dial--to the much-beloved smart phone, but its heft and washed-out screen has us giving the edge to the Treo 650.
Update: Walt Mossberg gives the 700w a thumbs down compared to the Treo 650:
Despite some nice new features, the Windows Mobile software is still inferior to the Palm software for one-handed use on the go. Its crucial email and phone functions are also weaker. And there's a serious bug in its email software that affects individuals, though not corporate users. So the Treo 700w is neither as easy to use nor as powerful as the Treo 650. In addition, the screen on the 700w offers significantly lower resolution than the screen on the 650, and the new model costs twice as much -- $400 versus $200.