I have tried a few smartphones, and I have found overall the audio isn't that great. By that I mean people have trouble hearing on the other end, and you can't raise the ear volume that much either. I might have had a bad product, but that was my feeling on it...
I know how you feel with two devices, but that may be your best bet for performance and quality on the hardware you will purchase.
i figured i'd throw in my two cents. i currently own a treo 650 smartphone and love it, the battery life isn't the greatest but i figure i could go about a week before another charge. the screen is beautiful (320 x 320), and so far i'v had no one tell me of having problems hearing me icluding people with bad hearing. good luck with your decision.
I got the the HP IPAQ 2940, which I am very pleased with. They are a good solid PDA and the translucent screen guard is simply excellent. Video playback and audio is perfect and you have great connectivity with a CF and SD card along with wireless, bluetooth and infra-red. Its bundled with windows mobile 5 (not really much different that the old one) and outlook 2002. All in all i would defiantly recommend it!
Ep, glad to see you come back and tidy up...did want to ask a one day favor, I want to enhance my resume , was hoping you could make me administrator for a day, if so, take me right off since I won't be here to do anything, and don't know the slightest about the board, but it would be nice putting "served administrator osnn", if can do, THANKS