Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Best in class for my needs.

I have used practically every version of the iPaq, and each one has let me down with the usual Microsoft "features"/frustrations . The Zaurus is fast enough, and has all the utilities and apps I need to stay organized, play MP3's, video, store password and account information, create documents and spreadsheets, etc. If you feel you need toys and colorful utilities on your PDA, then you probably need to stay with the Windows CE versions...and back it up often, but for me the Zaurus does it all. I have owned the SL550 (which met with a traumatic demise on a family vacation), and now own the SL5600. The Zaurus is stable, full featured and does not require you to spend extra $$ on a keyboard. Good battery life too. In my opinion, it is the biggest bang for the buck for its indended use as a PDA. Besides, what other PDA can you compile code on and write your own apps if so inclined, as easily as Linux and the Zaurus?