Octane Boost Additives

From the research I’ve done I think you are better off buying high octane race gas 105+ octane. Mix in a portion accordingly with pump gas. Then you know you’re boosting the octane and you’re not adding unwanted chemicals and can really move octane numbers up. After factoring in the cost of race gas you’re not really paying more. Octane boosters today barely move octane levels.
Carl