Just got mine 3 days ago and have been having a blast. It actually works
better than the $1000 option on the Toyota Prius when within the network.

It gives you detailed maps and voice directions, but won't do them both at
the same time.  It is VERY accurate within the car, even sitting in the
footwell. My Magellan GPS is not this accurate driving in Seattle. The menus
work great (even autofilling in things I had never before typed).  The WOW
factor when showing friends is stunning.  I used mine all day yesterday and
used only half the battery life.

Potential negatives: the locations database it connects to is a bit out of
date but is pretty in-depth (including a names phone book).  Lottsa out of
business restaurants and even a hospital in my neighborhood that hasn't been
there for a year is listed. My home address is off by 480 feet. All incoming
calls seem to go directly to VMail when Navigator is on. The software does
no caching, so it connects to the network any time you switch routes or look
at a map and then go back again.  Navigator will not work when out of the
coverage area and then you can't even access the last map or the info screen
showing location coordinates, direction and altitude etc that comes from the
GPS satellite. (So much for using it hiking or on my cruise next week!)  It
does seem to have maps for Canada and Mexico and some parts of the
Caribbean.

Keeping a leery eye on the minutes. It uses only air minutes, not data
volume. Nothing showed up for 2 days and then 120+ plus minutes was
registered against peak usage all at once. Nothing has yet appeared from my
all day test yesterday (Saturday), but if it shows up as peak the
application gets uninstalled and I'll swap for a phone that plays MPGs.  The
cust service folks say the airtime charges are kind of in-work and the final
policies are not set in concrete.

All in all I am very impressed.  My V325 was free under the new for two plan
and they gave me no trouble in getting it via fedex.