Bruce is right. TurboCAD is great. I got version 12 for 25 bucks brand new sealed in the box and shipped to me from eBay. I registerd on the company site and was able to update to version 12.5 for free. Ive used several different applications and this seems to be the best value by far... For wings, I really like useing CompuFoil. You can download a trial version from their site... www.compufoil.com. You can get a trial version of TurboCAD (version 14) for their site too... Version 12 isnt too much different from 14 and should give you an idea of what its like before you drop some money on anything...