uhm....
1) let me be the first to say this .... sony zaurus? or better sharp zaurus? I'd really like it better if sony were the zaurus owner.
2) even zaurus in not sold/supported by sharp, other might do it (dynamism sells and supports sharp zaurus in the US)
3) zaurus is 100% linux oriented, so all hardware included works as expected; regarding OZ (openzaurus) I think it is more complete/works better on zaurus that on an ipaq
my .02cents