Please tell us why the lowers you named work better.What some see as snobbery is actually a position based on facts rather than feelings and isolated experiences. When someone says "they work just as well as any comparable piece" you have to look at that entire statement. Yes, Anderson products will work just as well as a Palmetto product. They will not work just as well as a BCM, SOLGW, etc. YMMV is truer than you know. If you want something better than hobby grade, try Aero precision.
I'm always interested in learning something new about firearms.
At this time I only have two lowers, one of them is an Andersen with the built in trigger guard that I put together with an Andersen LPK, and the other is a Bushmaster that was complete when I bought it.
Both of them function just fine. I would like to put in better triggers at some point.