AvMap tracks 12 sattelites, and is WAAS capable.

What trumps the Airmap (and all others)? Size, plain and simple. The AvMap
is still the biggest color screen on the market.

When I'm on a cross-country flight, I can display the whole route of flight
and maintain a fair amount of detail, thanks to that gigantic color screen.
And when I zoom down to airport level, the runways can be displayed big
enough to read the numbers on 'em!

The screens are easily modified to contain all sorts of info. Right now we
are displaying Sunrise/Sunset information in addition to GPS altitude, all
the pertinent radio frequencies, ground speed, and all the other usual
stuff.

I'm looking forward to playing with the 396 at OSH, and I may change my
mind -- but I suspect if it's still using the same screen as the 296, all
that cool information will be less-than-adequately displayed.

In the case of GPS screens, size really matters, IMHO.
--
Jay Honeck
Iowa City, IA
Pathfinder N56993
www.AlexisParkInn.com
"Your Aviation Destination"