Mavi are really good jeans IMO, a couple pairs of them have been my favorite jeans in the past few years. I think they're Turkish or something like that. They're not ridiculously expensive, seem to be of reasonable quality, and don't tend to go the direction of other brands with fading and ugly stitching and jeweled back pockets. I've only bought a few pairs of $100+ jeans over the years. Two pairs of Seven For All Mankind which I fucking loved, but which fell apart after a year. And two pairs of Diesels, one which I stopped wearing because I just didn't like the cut/fit, and another which I just picked up last week and haven't worn yet.
I'm not too picky about brands for jeans. The larger lines have dozens of different styles/cuts, it's just a matter of finding the one that fits you. I like straight leg cuts for the most part, need some extra room in the butt and legs due to how diesel they are, and can't stand how 75% of jeans on the rack look ridiculous with a shitload of artificial fading and bedazzled back pockets etc. I might have 3-5 pairs in rotation at any one time, so I don't find they last me more than 2-3 years at most. Almost all of them wear out in the crotch.