A few weeks ago, I traded in my (practically new) Dell Axim x51v for a new UTStarCom 6700, mostly because it would incorporate a wireless data package and cell phone in the same device with Windows Mobile 5.  Actually, I sold the x51v on eBay, but that's another story. 

The 6700 is bigger than a cell phone, so it looks a little...bigger...on a belt, but it's better than carrying a PPC and a cell phone separately. 

It turns out it's WAY more useful than I expected.  I've found a handful of my already-favorite sites have PocketPC versions (Gmail and The Weather Underground for example), and being able to synch with my Exchange server remotely is very, very handy. 

Also, a recent flash update for the 6700 lets me enable DirectPush technology with the Exchange Server, so I'm seeing noticeably longer battery life, but getting email delivered within a minutes of the server receiving it. 

The only down-side (so far) is a complaint that I saw elsewhere on the Internet...the 6700 doesn't hold on to its stylus very well...I've already lost one of the two they sent with it.