I became a bit of a material snob over the past few years. I use Nylon as often as I can. But it’s the best quality nylon I can find. Polyester just doesn’t hold up well for me especially with briars and rough tree bark. Nylon is generally stronger and degrades at the same speed as polyester as long as you don’t leave it outside. That’s the point of polyester, it is more UV and water resistant. The fix for me was to not leave my saddle outside in the weather or sun for days. Using it in most hunting situations it should last just as long as polyester. Many ratchet straps are made of nylon and they live in the back of my truck under the worst conditions possible. And they still perform fine until they are noticeably compromised. So I concluded that a normal person would notice a nylon strap degrading well before a failure.