I've been without a PDA for nearly 2 months now, the longest I've gone without one in over 10 years. It's been driving me crazy not having information at my fingertips all the time.
I'm strongly considering the Dell Axim X50v. I've had no experience with Dell handhelds, though I've been extremely happy with my Dell laptop, and all the Dell desktops around here work quite well. The only handheld I've ever been diappointed with was the Toshiba, but everything they make seems to be crap anyway, so that's no surprise.