If I had a choice I would stay away from the HP iPAQ 2700 series, but this is what the school provided us for rotations & it mostly works.
I usually have to soft reset my iPAQ at least 2-3x q day & the only programs I have & use are ActiveSync, Epocrates, & a patient logging program that the school requires us to use.
Anecdotally, the older iPAQ's do not have the problems that the newer models do for some reason. I would expect this issue to be resolved w/ the ones coming out b/c I know that HP has heard about it from one largest physician groups in my state that uses only HP iPAQs.