I agree, I'm keeping my Youmail Visual Voicemail. It works perfectly, easy interface, transcriptions are dead on (I use the manual mode, not computer generated).
Besides, I don't want to be bothered telling everyone a new phone number. I'll keep my account open, I'm sure there will improvements in the future and let's see what comes up down the road.
There is a way to use GV just to have the voice mail feature.. let me see if i can find the link for you
To all this comes from googles help with the Google voice mail, if you were looking more just to have the voicemail to text part of it, it is a great easy fix, I will be toying with it tonite or tom