I love SoundToys! And having more of their plugins makes it cheaper to upgrade. I’m still waiting to pull the trigger and go all in, but I’m close.
I will say, I’ve always liked their balance between a fairly simple user interface, yet enough controls to go beyond the basics without having to dig too much.
I got SoundToys 5 last year. I really like it, though I feel I’ve only scratched the surface. MicroShift is great!
SoundToys has landed, or rather, is landing. If you own any plugins, the upgrade price is in your account. Mine is the cheapest I’ve ever seen.