If there's a choice I choose 60fps or in case of competitive FPS above 60. Anything over 144fps is pleasing to the eye, but has diminishing returns reaction-wise and puts exponential strain on hardware.

30fps is absolutely playable for portability, power saving or if hardware can't do more. I can tolerate occasional dips to 20s for the same reasons

PC player exclusively for 10 years and mixed consoles/PC another 10 years.