I recently upgraded to a Palm Smartphone 755p, with Verizon after being a long-standing user of the Palm Tungsten E. I have had no problems with my phone at all, and since nursing school loved the palm software it comes with. I tried the Windows platform version and hated it. Palm is much more user friendly and easier to operate in my opinion.
There is this website
www.treonauts.com and they have treo users who review treo smartphones and accessories and such. Great website, offers reviews on most of their material. Hope this helps!