I’ve seen Anderson disparaged as The Poverty Pony in one AR group. No problems with mine, but I don’t run it hard.
One of my 8 AR family rifles is an Anderson, and a very close friend built his Mk12 DMR target rifle up on one. They're one of the most consistent lowers on the market so far as adhering to the same dimensions receiver after receiver, year after year, and their 16-inch barrels are 1:8 twist and non-chrome lined, the same as the Army Advanced Marksmanship Unit Match Rifles.
I wouldn't trade my Andy lower for a Colt, nor a H&R, an FN nor a Bushmaster.
A Daniels Defense, maybe. The Anderson black finish coating is not the same as GI, but seems to wear better. I do run mine pretty hard.