Good question. Only have Polyscape ‘the original’ myself. Also the Abstract Mallets, Abyss, Vapor Keys, Wavesynth, Analog Tales, Continuo and Continuo Guitars. Particularly fond of the latter
Sorry to say, PC,, but IMO they are. Although I particularly appreciate the Advanced tab, allowing for ADSR tweaking (especially the attack portion of string samples).
I found this: “CloudBounce has produced more than 1.7 million master recordings since 2015. It has a user base of no less than 300,000 registered users from across 130+ countries.”
And apparently the full version costs $2000 over at adsr.com.