I have it and absolutley love it, others whom I ride with want to get it now also, even those with aftermarket units. It's a matter of preference, but I like the way it integrates so cleanly into both the bike and the sound system.
I have Garmin street pilot 2730. I also use it in car and it's easy to "touch" control on bike. it also has extra memory and MP3 player.... best bet for $s