Not happy with my 700p, or with POS. Am going to switch to a WM5 Samsung soon. Views based on comparison between a Sprint Treo 650 and a Sprint Treo 700p:
The Bad
My 700p resets ONCE A DAY while running 'Phone' application!

The lag between apps is slow, especially if on the web. There seem to be less developers creating apps for POS, and many of the old ones have disappeared. Bluetooth drops without cause, the 700p won't format my 1 gig sd card, for some unknown reason, I just lost all my calender events, battery life is shorter. I can only assume it's because of EvDO, and POS doesn't have a Flash plug-in, so I am unable to navigate many of the sites I visit. Kinoma player SUCKS for streaming audio or video. I frequently get insufficient bandwith error messages. I tried to beam a contact to my wife's 650 the other day, no go. Tried to send it via bluetooth, no go. I know it's the 700p that's the problem, because when I had my 650 beaming was no problem at all. Phone constantly resets while uploading or viewing pics on Picture Mail server (Sprint). No BES access, no BT voice dialing capabilities, no multi-tasking abilities (all are POS complaints).
The Good
More memory. This is a HUGE improvement. Ironically I still generally only use up about 10mb of memory for programs. EvDO. Again, a HUGE improvement. There are sites that wouldn't even load on the 650 because of a lack of memory and slow speed that are viewable on the 700p. Ptunes is the resident MP3 Player versus Real Player on the 650.
Clearly for me the bad outweighs the good. Others have different needs and experiences. I started with a 600, went to a 650, and now the 700p. All with Sprint. I am most disappointed with the 700p. If the 650 had EvDO access, I'd go back to that if I had to choose between these two devices. Thankfully I don't, so it's off to WM5 and Samsung I go!