Sylvan
I'm really into method three right now, it is the one I am currently using the most. I have shied away from any kind of stretching thus far as I cannot allow any artifacts to get through to my clients. I can experiment later when I have some down time with Melodyne, but with the three methods outlined in the videos, I already know there will not be any artifacts. I have Melodyne essential, is that sufficient?
I will report back my findings when I can play around with it. I often get a lot of blast beats with metal bands at my studio so I need to move quickly without artifacts. This is very important. With slicing and crossfading I know it will work. I am skeptical with any kind of stretching but will give or a spin later just to see.
I'm not entirely sure, you do need some kind of multi track ability, I think normally that only arrives with Studio but possibly ARA lets you do it with lighter versions? One project I loaded all WAVs in the standalone Melodyne Studio, for another, I stayed within Sonar.
It wasn't paid work, I just thought "if this is an easy fix and I don't need to repair lots of stuff I'll keep it, otherwise I'll stick with the original and call it a day". To my surprise, it worked really well. The time I did it in Sonar something went wrong the first try, I think I didn't have all notes selected or maybe some tracks weren't set to "percussion". After verifying I tried again and it worked great. Both times I chose the "auto" grid and didn't quantize to 100 percent.