You will notice more of a difference going non ethanol than premium. Ethanol and EPA...what a scam. Look into ethanol issues in storing fuel and older fuel systems (let alone small engines and marine applications).
I for one would like to see a one fuel system with additives for premium requirements. It should drop prices as well.
One of the reasons I went with a 6.4 hemi was the 87 octane only. Now what pulls my chain is 86 rated fuel and oxygenated fuel. CARB needs to stay in California.
We as a nation have went from doing what works to what sounds good.
I always go with what the owners manual states.
2014 Silverback 29RE, 2014 Ram 2500 CC 4x4 Hemi 6.4 auto w/ airbags, B&W Companion. Saltwater boats and rum like any good pirate.
Loose the 2nd and the rest will follow.