Mostly of your gear will depends exclusively by your preferences...
640x480 best res
less pixels = easier to aim pixel perfect
My dick is 27inch and 144hz so very good girls like it girls love it sneaky beaky
24 inch on 1080p is best because it looks very sharo and not blurry than you use 27 inch.
whats better about a smaller monitor in your opinion
eh, I honestly thought the same when I switched from 22 to 24, but 27 is probably too big. I mean you will get used to it, that's why it feels weird to play with it, you're not used, but I don't recall any pro using a monitor bigger than 25
edit. Just checked, JW and olof are the only ones
i played on a 27 inch monitor for like 2 years, switched to 24 recently and it feels way better.