The VR-ME (Vari-Mu) and VT-ME (Daking FET) comps are definitely useful. I haven't used the others much but those plugs are definitely worth trying. I have UAD + many other plugins but these comps sound different than all of those. Not better or worse, but just as useful in some circumstances. Thanks Antress!
Just noticed version 2.50 of these plugs are up now:
Antress Modern Plugins