Some may like L4D2 better, but to me it is like comparing the original "Dawn of the Dead" to the original "Night of the Living Dead". Dawn may be good and more colorful, it also came after and built onto the first. However, L4D and Night have the darker, been-there-first edge to it. L4D is more of a horror game to me than L4D2.
Plus, since we highly modify our servers, we like having 6 hunters spawning at a time to really keep the survivors working together and staying on their toes at the sound of hunters spawning. It's knuckle-up or you're gonna die quicker than on the stock servers.
One of the most fun games to play as a MAN! Man-up! All Man! No Cover! 16 player Campaign CoOp, Deathmatch, Beasthunt, Survival, CTF, Last Man Standing. You shoot everything that moves in this game while Mental is trying to Moon you. Many characters to choose from. Carry as many guns as you can handle, sniper rifles and lasers can be found in hidden locations. Let some rockets off the chain and switch to the minigun! Headless kamikazes! Awesome soundtrack. Croteam Delivers!