PC World reviewed the IPaq Hx2755 PDA from HP and they seem to be a bit disappointed. Here's a short snip:

The Hx2755, which runs Windows Mobile 2003, comes with Intel's powerful 624-MHz Intel PXA270, which handles standard applications without breaking a sweat. The 128MB of internal RAM (up to 80MB is available to the user) stows a fair amount of data, and you can use appropriate media cards in the CompactFlash and SD Card slots as well. In my informal tests the rechargeable lithium ion battery ran for nearly 6 hours of light use before shutting down.



Link: PC World