If you have a PPC, you already have one. Microsoft's Media Player is included with CE3. This feature is great for frequent travelers. You can store a lot of music on a RAM card. The screen itself has an anti-reflective coating on it that provides a nice, almost pen on paper feel.
Resolution is wonderful.
I can read Word documents rather easily on the screen in type size that approximates 6 points. I'm not quite sure what that is, but type is very easy to read. The PPC's come with Microsoft Reader, a document reader program with excellent ergonomics. Using the program to view web pages was tedious because of the screen size, but formatting was remarkably maintained with even the most complex pages I tested. In fact, Pocket IE has AvantGo code segments included so that users can take advantage of that program's caching and subscription features.