I have a zaurus. I am selling it. I had a 770 about a year ago, sold it, went the zaurus route (a 3100, pdaxrom, etc.) and am now back on a new 770. My interests are solely writing software for the device. I personally feel the 770 has more to offer, and there is a good amount of software out right now on the 770.

The whole problem with the zaurus is that even though it can run xmms, matchbox, rox, firefox.. they are all painfully slow since many are unoptimized ports. Plus ofcourse there is no built-in wifi or bt, and adding even a small form-factor card drains battery and makes it hard to type on the keyboard.

Just my 2c..