SGB

I have a Privia PX850 which I'm 99% sure has the same "Tri-sensor Scaled Hammer Action Keyboard II" action as the PX-5S. I don't like heavy actions (e.g. Yamaha P255, every Fatar Nord I've ever tried), but the 850 hits a sweet spot for me, similar in weight and feel to the PHA-4 Roland action, heavier than the PHA50. Mind you, its graded weighting makes it pretty substantial in the lowest registers. And it's a loud, thumpy keybed (not uncomfortably so -- for my fingers, at least) with clicky keys. I see at least one PX-5S user has the same problem: https://www.casiomusicforums.com/index.php?/topic/13826-px-5s-noisy-keys/

I was just playing a Roland FP-90 yesterday, and I think it has the lightest action of any weighted DP I know. It's almost "too light," "too easy," if you feel any need to work for those notes. I believe it's the most affordable PHA-50 board, but still not cheap. Worth checking out.