Which garrys mod RP server is the besrt ?

whichever suits you realistic or unrealistic, p2w servers are terrible because the so called "donations" cost tons of money just to get better guns for your character.

Don't really have a -favorite- garrysmod server, i just play on any server i find fun.

KDGaming is the best for my opinion. If you'll play it with your friends, you may forget eating something or sleeping xD