I really can't fault the pronto apart from possibly it's cheap screen doesn't look too good unless you fiddle with the contrast a bit & switch on the backlight, but it's a great remote, with stunning customisation options.
I much prefer my Sony Clie and have sold my pronto.
The hires colour screen, better back light and better touch sensitivity are great and its just as easy to program if not easier than the pronto, you can also use the pronto remote codes from remote central too
The ir range isn't a problem 25ft and unlike the ipaq I dont have to point directly at the device im controlling.
Which is handy as the pj is on the ceiling with no direct view of the ir sensor from the settee.