Is a 27-inch or 32-inch 4K monitor better?

It depends on use. Across the reviewers we read, 27-inch 4K delivers the highest pixel density (sharpest text, no scaling required) and is favored for desk-distance productivity and gaming. 32-inch 4K trades some sharpness for more usable screen area, which community threads say suits media and multitasking, though some 32-inch VA panels draw complaints about viewing angles. If you sit close and want crispness, 27-inch wins; if you want immersion and desk real estate, 32-inch is the call.