IO,
Got the AvMap myself, its a bl00dy good piece of kit and can fault the display.
The menu system takes a while to find your way around but that just takes a bit of playing. Swapping between flightplans can also be a bit of a pain.
Dont bother with the European distributor - which if I remember correctly is in Italy - as they will charge you about £1200. I rang AvMap direct in the US and got it for about £600. I also bought the European database and the extra battery pack.
Julian.