Melodyne's website also has many detailed free videos on usage. I have both AutoTune 7 and Melodyne. Melodyne's tutorials make the difference. Apparently the folks who make AutoTune figure it's someone else's job to teach you how to use it if you can't figure it out from the manual, whereas Melodyne actually has the developers explain how to use it, why it does things, etc. themselves (albeit through a translator as they are German). That makes the product much more attractive to me. Of course, a lot of the time if I just need a tweak here and there, I'll use VVocal, which is quite respectable also. Until the X3 integration, I saved Melodyne for the hard stuff, like removing stray notes from a track, correcting chords, etc. I am really happy to see how Melodyne now integrates with the Sonar X3 transport. Going to be much easier to use now!