I have two Rebecca Minkoff bags. One is a MAC from 2012 or so. This one held up really well, no wear I can find. I have a bucket bag, in the same shade and similar leather. This one has wear and is fading. It wasn't dyed nicely.
I have a couple of Kate Spade bags. My scout cross body is indestructible. Unfortunately my awesome cobalt blue quilted bag looks like crap. Peeling handles, the dye has worn off on the corners and in the middle. The zipper pull has peeled apart. My sister had another bag - I don't recall the name - and the black dye stained her clothing.
I have saffiano satchel that was super cheap from KS I use for the rain. The saffiano is not as nice as the first gen MK Selma I have. That bag has held up nicely. I found MK inconsistent. I don't trust certain closures as I tried out several bags over several years and the clasp didn't stay shut. I sold the first as it was too late I return. I tried a few years later and they had similar failures.
I have a MK collection bag - Miranda - it is really nice though no longer practical for me.
I have a Fossil bag - this has held up nicely. But leather quality is hit or miss.
I have lots of Coach bags and almost all have help up really well. My Kristin had peeling glazing on the handles after a couple of years. The Sophia looks decent but the handles have darkened on my light grey bag. This week I am revisiting my all time fave coach bag - the small urbane. This one almost has zero wear, other than some bending of the shoulder strap. My market tote looks new as well. I haven't had many issues with my coach bags at all, but they have minimal hardware and are made of leather. My nomad hobo has a small scratch (my fault) and a few creases (my fault).
Generally I am pretty lazy about my bags. So I should see problems,
A premium bag that sucked? Reed Krakoff. I got one at an outlet, but the strap ended up coming apart and I had to get an ugly repair as it was after the brand had folded. My coach bags held up much much better.
I have a Lo and sons bag. Very nice for the price. Much nicer than the Kate spades I have. And lots of pockets.
Another winner? Eleven thirty. I picked up a bag in a hipsterboutique. It is made in Canada. Super nice leather and I get loads of compliments. My only complaint is the straps are hard to adjust with the sturdy thick leather straps. This is one of my fave bags. And there is no branding so it is just an under the radar leather bag. My small crossbody bag holds a ton - small wallet, water bottle, scarf or sweater, phone charger, lotion, lipstick. And there is a little room to spare. With a smaller scarf full size headphones too.