I really like the terrain features for planning mountain flights. That looks very neat.
(image:
http://www.worldflightplanner.com/images/tour/terrain-clearance.png )
I have used the AOPA online planner one time, since my dad subscribes. I just used it to compare to my pencil-and-paper plan for a solo cross country as a student.
http://www.aopa.org/flight_planner/index.html?PFIt seemed to work well, but it's not free either.
Just a heads up, for any Canadian pilots that are COPA members, it looks like you get a $25/year discount on the OP's software.
Anyways, thanks for the link. I'm going to look into it and let my dad and brother see too.