1. twice!
2.not sure.mine doesen't, but I understand it depends on the model
3.nope
4.it uses the pronto pro/tsu6000 ccfs and has therefore a larger screen area and 4 lower hard buttons

I have a ru 940 and ipaq 3800. All in all the ru940 is still the more reliable and user friendly remote (IPAQ is a very good reserve though) I guess it is a matter of taste. You'll have enough people who think the opposite (but most of them don't actually own a pronto and therefore can't really compare)

If I today would buy a PDA for remote, it would be an Axim with IR extender.Seems to be the most popular choice in this forum.