Having used ALL FF plugins, I love them.
Question/Idea on Pro C2: Do any of the algorithms utilise RMS thresholds to trigger compression, rather than peak, or a controllable blend of the two?
I'm thinking more for macro-level ultra-transparent smoothing in mastering. I know C2's 'Mastering' mode looks like it does something a bit like that, but I would be interested a little more in it's mechanics.
There are some well thought of bus compressors from people like TDR and Stillwell that use RMS and Peak thresholds. Personally, I've not tried them but logically they sound both interesting and sensible.