The biggest negative is the weight of the Visor+VisorPhone in this day and age of tiny phones.  My Prism+VisorPhone weighed in at 10.0 oz, well more than many cell phones.

The speaker of the VisorPhone is excellent in loud or quiet situations.  I was even able to use it as a speakerphone when checking my voice mail.  The free "$25 Value" headset that came with the VisorPhone was of about $10 quality.  I could hear myself when talking to someone on the phone and the sound quality was worse than when not using the headset.  Besides, it was nice to finally use the built-in microphone of the Visor.  I suggest you invest in a better headset if you plan on hands-free operation or want to use your Visor while speaking on the phone.

GSM isn't available everywhere, but it's currently much better than CDPD wireless technology offered by the Minstrel S modem.  There was only one building that I had too weak a signal to use the VisorPhone, but everywhere else I was able to use the VisorPhone without any problems.

As for carrying your VisorPhone, I used the slipcase that came with the Prism to carry the VPR+VP around.  When I was in my car, I used one of those foam cupholders that connects to your car's AC vents to hold them.  It worked out very well since I was using the headset.

The vibrator on the VisorPhone is very good and is something that every cell phone should have.  Battery life on the VisorPhone is adequate and will never be a problem for Visor Prism users that leave their handheld in the cradle.

The only improvements really needed in the VisorPhone are in the Call History application.  As I said earlier, a total minutes feature is needed, as is a tally of Modem minutes used.  Customized rings would also be nice.  I would also like to see Handspring let the VisorPhone's vibrator act as an alarm for DateBook.

Conclusion