The soundtoys plugins that I really rate (I have all of them) are…
Desert Island VSTs:
Echoboy, already discussed above.
Decapitator, a truly great saturation plug in, fabulous on almost any material, as good as most of the expensive UAD equivalents all rolled into one.When after a bit of dirt I’ll often flick through UAD Fatso, then Distressor, then Culture Vulture, if none of those hit the spot Decapitator usually does exactly what I want. I only go though this pain everytime coz I’ve spent a lot of money on the UAD plugins and want to validate my choices! In reality Decapitator just nails it most of the time, the only other saturation plugin that’s as versatile is Saturn.
Very,very good:
Panman, do almost anything creative pan tool.
Little Radiator - nice crunchy heavily-coloured saturation.
Crystallizer - great for just mangling stuff!
Excellent:
Filter freak.
The rest are all good plugins - there are no bad Soundtoys plugins but they’re not “go-tos” for me - like those above.