Ray, out of interest, why must be it non-palm based?
I'ved tried quite a variety of devices, including various mobiles, Pocket PC and Palm PDAs, plus Blackberry (the one including a GSM phone). I am happy to explain why the Treo 600 works the best for me by some considerable margin, but if there is a particular reason why a Palm device is no use for you then it isn't relevant I guess.