LAX is one of my favorite airports in the US, at least in T6 and T7. I've gone through security 250+ times there and never waited more than 5 minutes. In fact security is so quick there that I'll go out to the bridge several times for a smoke on a 3 hr layover. I like Wolfgang's pizza, and I like Biersch beer, so I'm good to go.

I have had a few (~10%) lengthy experiences at check in.