If i bought a brand new car then yeah i suppose id run it on Optimax, or atleast more often than i do now.
But you got to think about it ........ back in the days when Cosworths and RST's were new how much Optimax did you see around!!! They were designed to run normal unleaded, optimax i suppose is a bit of a bonus really. Thats why i run Optimax every now and then and not all the time, but i guess its down to every individual really.