Depends how much walking , brush busting many times a year you wear them. Wear mine duck hunting too.
I have Simms, Patagonia, llbean, Baileys Orvis
Honestly all about the same. About 3 years max for me. I purchase the mid level ones around $200 to $250 off season on sale.
Patagonia and llbean have best warranties. I think Simms gone done hill a bit in quality and the warranty service too.
