HTC vogue, for about a year and a half now. It doesn't have wifi or g-sensor, but I'm happy with it. Sprint 3G network is pretty reliable for me. I keep looking at android and the pre as alternatives, but I like where winmo is going with windows phone and I'll probably stay with it at least until wm7 comes out in 2010. I've tried android for the vogue and I like it, but not enough to switch yet.
the avatar is pretty cool. I just found out about the MS tag reader a few minutes ago while I was trying to download Groovefish from 1800PocketPC.com. They have the CAB to phone feature where you just scan the MS Tag and it sends you right to the link for the cab.