Hi, mate. I'd go so far as to say that these are in a different league.
I'd start with Vocalign Project (I did) if I were you. If you have any version of Melodyne, you can do most, if not all of the things the upper tier can do (perhaps not as fast).
And you're going to have to align 2 and 2 tracks, whereas the upper tiers can do multi-tracks. Not a big deal(breaker) IMHO.
All the best.