If you want to switch from Auto-Tune, I highly recommend Melodyne Couldn't be happier and probably my most used plugin next to AmpliTube. So in the end I got Melodyne Editor for 240€. Also they told me to wait 2 weeks because around that time they would offer 20% discount on all of their products. It wouldn't matter that I got it for free because of my interface purchase.
They kindly replied me that I'd qualify for an upgrade as long as I own a Melodyne version registered to my name. Many companies exclude free software from upgrades. So I asked Celemony if I'd qualify for an upgrade. I was thinking about buying Melodyne assistant but 250€ for a plugin I didn't really need was too expensive for me. I kind of grew to like it but the limitations of the essential version were really annoying. Last year I bought a Universal Audio Volt 476 interface and it came with Celemony Melodyne essential for free. I was never too fond of pitch correction tools. They don't have any problems with Auto-Tune at all. I think it's a Mac only problem, because I know a few people who use Reaper on Windows.
