The ones you suggest can be full of potholes that cost money. Anywhere Jepps or Aerad are they will too. Can't get away from some depending on what you want.
However, try this site and follow the links you will be surprised what you can come up with. It's an honest site and the humps and hollows are in full view.
http://ourworld.compuserve.com/homepages/cranenburgh/
While you are at it you should/must go to this little known site where you can get STARS/SIDS/CHARTS/FLIGHT PLANS/WX Airfield data Everything! The wx might be iffy but the data isn't. Won't cost you a single penny.
http://www.fallingrain.com/air/airports.cgi
[This message has been edited by InFinRetirement (edited 15 March 2000).]