Personally, if the oil is changed regularly, it really doesn't matter what brand of oil is used provided it covers the viscosity requirements.
These "best oil" debates are like comparing bottled water. If you're thirsty enough, you won't be reading the label now will you? You need drinking water. Doesn't matter what brand nor how much it costs. No difference with choosing oil in most home owner applications.
We all develop our preferences. Those with mechanical experience who do a fair amount of work on machines come to the conclusion that the "best" oil is usually what can be had for the least amount of money and covers all of the bases.
I've run numerous engines for over forty years and have had only one oil related engine failure experience. It was back in 1977 when Amsoil was fairly new. I had a new 1976 Ford F100 with a 302 V8 in it. After I had put 5000 miles on it, I was persuaded by the shop mechanic to use Amsoil synthetic in the engine. Six months and 4000 miles later, the engine was making very loud tapping noises. I brought it in to the same shop and they said the problem was that the push rods had mushroomed on the ends due to the oil not providing proper lubrication. Well, as you can imagine, a rather heated discussion took place because that very mechanic had recommended the Amsoil. His reasoning for the oil failure was that the engine wasn't being brought up to high enough operating temps in the winter to cook off any condensation in the oil. The oil's ability to lubricate had been compromised because of it.
I was in my early twenties at the time with no previous experience with synthetic oil so I took his word for it. Since then, I've never used synthetic oil. I'm certain that things have changed and new synthetics are probably great oils. That is of no consequence to me. Decent quality conventional oils are great too and for a fraction of the cost. I use one litre of synthetic oil a year in my snow thrower engine. That's it.
Bottom line is:
Buy the best priced, quality brand name oil suitable for the application and change your oil as required. Don't sweat the labels.
