From my understanding, Quiet2 is just 3 pitches and Quiet is the full bank. Same with Edge and Edge2. I suppose they made those options for those on slower/capped connections. No real difference in quality where they can be called a loss (any differences to be detected are subtle). Given that Retake Normal, Original CV, and VCV already exist, the Retake Single Sound and Act 3 would be another case of redundancy.