It's very hard to choose a decent PPC today, especially if you want to get a VGA PPC. All the recent VGA devices have some drawbacks, which may not be evident for some prospective buyers. Therefore, it's really recommended to read user opinions and discussions before going to buy a VGA PPC.
Below are some of the threads either comparing (mostly VGA) Pocket PC's or speaking of their common issues. Please note that these links are only from Pocket PC Thoughts, PocketMatrix and Brighthand. I'll also post some links from Pocket PC Magazine, Aximsite, Firstloox and iPAQHQ some time in the future.