I've always used BP 93 octane Ultimate fuel. Where I live, we have a new Conoco Phillips which has 94 octane premium. My question, which fuel is better to use in my vehicles? I've never had any problems with BP fuel, but when I saw Conoco Phillips has 94 octane premium, that got me thinking maybe I should go for the higher octane. Is Conoco Phillips additive package is good as BP's Invigorate?

Thanks,

Craig