I only have about 3 resort days on these pants but I have to say they are pretty sweet. I have no negative comments on their construction or burliness at all. I will likely end up replacing these long before I burn them out from the looks of things. Going to tour in them in February (thats what I bought them for) and they are very light and have huge vents. I expect them to perform well. If I have anything negative to say after that trip I will report but no new will be good news and I dont anticipate anything. I am 5-10 and 165 with a lean build and the M is fine. If anything it is a little big. I am not sure if the small would have worked but it might have. I am happy with the M and have no intention of switching them out. At present I do not have one but I have tried on a few of their coats in M and that is my size there so who knows
Dont sweat picking up a pair of these pants if you are on the fence. They are legit.