@Black-Square here is the video i pulled together. it's sectioned off by some time in the caravan pro cockpit, then the turbine duke cockpit, and finally the analog caravan cockpit using the ftsim+ sounds. Please excuse the beginner-level editing and lack of adherence to checklists. I'll repair my engines prior to my next flights, I promise.
https://youtu.be/bd6q7eGjazo
I wanted to try to pull together a small sample of sounds that might help me compose some more meaningful thoughts to give you.
I realize sounds are super subjective so take this feedback as you please. The engine sounds on the new caravan pro sound much quieter to me, especially at the ends of the throttle (at idle, it sounds like there's a cabin fan running in the background, not an engine) and at max power it just feels like it's missing that throaty roar that you get out of the other two soundscapes. It just feels like it lacks depth and purpose.
I was also noticing that there was almost no difference when moving the condition lever from low to high or back in the new caravan pro. There should be something more going on here, right?
Something seems off with the beta / reverse thrust but since my IRL piloting experience is limited to single-engine pistons, I don't have real-world experience to base this off of. It just sounds thin and not throaty like I would expect.
Honestly, now that I am reading back through this it sounds to me like the entire engine soundscape is lacking bass and depth. That's the best way I could describe my experience.
I hope this helps. I am happy to do more testing / sampling / whatever if it would help you. Also, as an aside I initially started up my sim, uninstalled the FlightFX Piaggio and restarted the sim prior to collecting these samples. I don't think that causes an issue on '20 but I wanted to eliminate it from the board just in case.