Very good point re: destructive editing. If a user thinks he will be working with numerous edits and added effects he may well prefer one of the DAWs presented here to avoid the problems you encountered. Audacity is a powerful soundfile editor, no doubt, but it may not always be a recommendable substitute for a full-featured DAW. As you wrote, there's a place for each kind of program. Choose carefully. Or as the rastas have it, "Measure twice, cut once." :)