Great video. I have owned all three at one point. We was by far the worst, but it was fun to use until I bought other gbbr's. King arms is nice enough, but I enjoy the feel of Kwa lm4 the best. Plus if you take care of it there should be no issues. My hop-up is treating me right, no issues yet.
I would say Kwa or king arms. We is a decent gun, I just had a bad egg and dumped plenty of money into it before selling it. Almost traded for another one but deal fell through.