I say this not out of which I like the best, but of which I see in the field, and is known to be reliable. I personally own a KJW single stack 1911. Its a good pistol, does its thing without problems. On the other hand, their "variety" is lacking. The only have 2 glock models, 2 1911 models, and a few beretta models, that are worth anything. Everything else sucks. On the otherhand, KSC/KWA have alot of models, but are pretty average weapons. Overall, I think KJW is the most popular becuase of their cost, and performance.