For cheaper keycaps that come with an office or "gaming" keyboard, sure, but not for higher end ones. PBT doesn't shine after a lot of usage like ABS, true, but

For cheaper keycaps that come with an office or "gaming" keyboard, sure, but not for higher end ones. PBT doesn't shine after a lot of usage like ABS, true, but high end ABS keycap colors and the sharpness of double-shot legends still tend to be better than PBT (e.g., GMK). Sound and texture is quite variable too, so it's really just a matter of preference. I've used nice PBT keycaps but tend to prefer how nice ABS feels and sounds better.