I have Melodyne 3, not 4, so things may have changed in Melodyne. But I like that I can draw freehand envelopes, which allows me to get different curves between notes that sound more natural. In fact, the vocal tuning overall sounds more natural using Waves Tune.
One of Waves Tune strong points have always been it's ability to keep things as natural sounding as you need it to without introducing that autotune effect unless you push it to do so. I wish they would update the interface (a bit constrained and not resizable) and make it work without needing Rewire but for what they sell it for now days it's really a steal. There are some quirks but easy work around and has paid for itself over and over again for the use I've gotten from it.
True but I find it helpful to have its transport to sync with my DAW. I owned it before Reaper was officially supported and the transport didn't sync all so I do remember it not being that big of a deal but I'm glad Waves finally added Reaper support and I'll admit, rewire is really just as simple as loading and forgetting especially if it's saved in your template like you've done so it is a bit of a silly complaint on my end.
I have both and find Waves Tune is much quicker and easier if you are just fixing out of tune vocals. I haven't used it for other instruments since I mostly use VIs. I've also done small amounts of harmony making with it, but you don't want to change the pitch too much or it sounds weird.
Melodyne requires a lot more work but also does a lot more. Plus it will do polyphonic sounds (okay) that I don't think Waves does.
For $29, I would grab it if you don't have it. Get it from everyplugin.com as they give discounts. They usually take any Waves discount couponso too.
I picked it up for $22. There is a "Soundgrid" test on Waves website. It gives you a free coupon worth up to $50.
Everyplugin.com - when I applied the coupon it wouldn't take me down further than Waves.com did. I think there's a lower limit that Waves imposes.
$22 for this is a good deal.
Curious if any others feel that Waves Tune sounds more "natural" on vocals than Melodyne??
I don't care so much about the workflow, since I'm already use to deep editing in Melodyne 4. I admit that I do occasionally get artifacts in Melodyne. That may be partly the singer's fault