Octane boost is for the most part junk just real strong cleaner. Race fuel is the only way to go but you should only use it if you have to, most marine motors don't need it unless real high comp. race motors.
I have been using this fuel called Nu Tech in the race bikes I build and tune. Even stock bike's that run real good on pump gas have been making 6-10 more on this fuel. That may not seem like a lot but if it had 105hp now 115 that's a lot. Down side it eats up rubber and cost $22 a gal. How much do you want me to send you?