Try Mountain Scope. I think that it is the best system available, if you use the lap top in flight. (I especially like the terrain avoidance feature.) Personally, I carry a laptop GPS with me everywhere and use the Delorme Streetmap software on the ground. It has got me to destinations where mapquest and AAA have left me hanging.
Larry Severson Fountain Valley, CA 92708 (714) 968-9852 lar...@socal.rr.com