There's way more steel links out there to fail though. And since most people can weld steel you'll find more out there that are home-fabbed whereas nearly all aluminum links are professionally made.
I've run ...
2.75 x .375 wall lowers, bent them ...
2 x .25 lowers, easily bent them ...
2.5 x .25 chromo HT, bowed one, flipped it over, bowed it back never bent one. These have been my favorite so far.
I've never ripped a bung out of one that I've welded. After your whole ordeal with Heretic I went back over some of the welds on my Heretic links though. I understand why you seem to loathe Heretic, or at least steel, links but I definitely feel that you had faulty welds and would have been happy had good welds been put on your links to start with. A proper weld should be stronger than the material, right? So by default, if a weld breaks and the bung comes out, the weld wasn't done properly. In the 2.75 x .375 lowers I ran for years there were no bungs available with the right ID. So I just got the closest I could find and welded those bitches in hot. They were loose in the bore, uncentered as a result, totally booty-fabbed. They never cared. If anyone should have tore a bung out of a link it should have been those. This just goes as evidence to me how a good weld is so important on a link.
I'm going to try 7075 lowers on my next rig. But it's going to have .120 wall or .188 wall steel uppers. If I can find someone that sells chromo .120 wall HT tube that's my preferred.
