I bought 3 pairs over the last 20 years (and have a forth ready NIB when I need them). I love them, they are great. I'm a 100-125 trip a year fisherman and fish "actively".
Take care of them and they will last. I rise them off after every trip, always hang them do the inside dries and wash them twice a year. Fit them well by adjusting the straps and keep in mind they need regular adjusting. I also bring them in from the garage during extreme weather >90 or <20. I make sure they are away from the gas tanks of yard equipment
I find they wear out between the legs in the crotch first, at least for me. The material rubs. I think It's more of a "me problem" because I'm kind of between sizes. The L is not large enough in places, but the XL is a little too big.
I have cut the legs off just below the crotch once the crotch area fails and use them a couple of years as hip waders- another way to get more time out of a pair.
I really like the flip out tippet tender and pouch.