Grew up in Levis. Wore them forever & still have a few older pairs. A few years ago I noticed zipper failures, seam failures, and a general cheapness as to overall weight. Gave up on them.
Tried Texas jeans, made in NC not imported. They are ok & superior to Levis. Bought a couple of HD jeans on a closeout, they are also better than Levis.
Have not had a pair of Diamond Gusset but friends who do swear by them. Good wear.
Am pissed about the Levis poor quality these days. Wore 501's, 505's styles for almost 50 years. Then they make crap from some foreign crap factory. Stupid.