Not really anything useful it that thread for 2019, if you want truck-lites get the quadratec version, if you want JW-Speaker projectors get the quadratec brand JW-Speaker. The projectors are similar but are much more expensive and questionably better. Sometimes too much information is just that, what do you really learn in that 23 pages?
I just installed a pair of Truck-Lite 27270C headlamps. Only had them a week. So far I really like them. It was important to me to have DOT stamped right on the front. Which is why I got the Truck-Lites.