Windows Mobile 2003 Review from PDAJunkie.com
"If you are purchasing a new Pocket PC, go ahead and get one that has Pocket PC 2003. For the average user, the improvements will more than make up for any of the existing shortcomings.
If you are an existing user of Pocket PC 2002, it's up to you to decide if you want the latest and greatest in operating systems. Just be aware that the improvements may not be up to your expectations, and that the major differences in the OS jump may mean longer than normal delays in the upgrade availability - so be patient!"