I just bought an Ipaq 5450 off a gadget-mad colleague. Nice little piece of kit. Most importantly, it has built-in wireless and expansion memory slot, which was the big problem with the old Ipaq I had, needing to use sleeves for all that. What's more, my old PCMCIA sleeve, which the junkie scum didn't manage to steal with the Ipaq, works fine with the new one.
Now I just have to get rid of Wince. Great timing, because handhelds.org seems to be down. Bugger.