Personally, I have always stayed with Pocket PC. I started with Windows CE because it was color when Palm was black and white, or grayscale, and have stayed with it since. One thing that I like about ppc is that it is very similar to Windows, and until recently had more memory than Palm. I think, now, it is more of a personal choice.
Thanks. If you do not need something immediately, I would wait a month or so since Dell supposedly has a new Axim in the works. They are a good company, and have really decent prices. I just hope they improve the D-Pad in the new model.