You will get opinions over the full spectrum

I use Stabil because it makes me feel better. I have never done any type of comparison testing. I do know that I do not have issues with fuel degradation. One difference is that I put a lot more miles on our car during the season, at least 500. So I start the winter storage with a full tank of fresh fuel.

I will note that even Stabil has a limited life.an unopened bottle has a shelf life of 5 years. It is no longer effective for storage after 2 years.