I'm finally going to have thick PBT AND thin PBT to compare with ABS in the next few days. So far, I've found a pretty wide range of how different ABS caps feel. ABS SP doubleshots / thin WYSE doubleshots, vs. stock Filco caps (thin ABS), vs Ducky Shine caps (I think it's ABS, but I have a feeling they are some special softer kind of translucent ABS that's then coated in this rubbery color). They all feel quite different, and I have certain preferences. I have also tried thin PBT (OEM profile) and thick doubleshot ABS (new Cherry modifiers from EliteKeyboards). I can't say that ABS feels better than PBT because of the aforementioned differences I've encountered even among ABS caps.
The proper thing to say would be "I prefer X keycaps that are made of Y material in Z profile, and P thickness on M switches", because all of those variables matter."