PDA's and Pocket PC's

I'd love to get a PDA or pocket PC, but I don't know which model or brand to choose. I've been doing a little research on my own through PC MAgazine and online and have came across a few that are said to be pretty near the top of the list. The one I always hear about is the Palm TX which I am kind of leaning towards. However, the other two that I also have heard good things about are the HP pocket PC's and the Dell Axim's. I've seen and looked at many different HP ones but only a few are available from their website. The Dell which I have also looked at doesn't seem to be available at all on their website the last few times I've looked. I've heard good things about all of them, but if anyone knows more than me or which brand/model is the best then please comment back.