I've been a long time Palm user, but the 700p's issues have rapidly driven me to considering other options.
We use Exchange in our office, and thus, with a WM5 device, I can get push email, etc., all for no extra cost. So that's also a very nice thing.
On the GSM front, the next-gen GSM Treo will be WM5, and slightly small and antenna-less.
On the CDMA front, Verizon already has the 700w, and Sprint should be releasing their 700w shortly.
Steve