Default Pump 93 or nonoxy 91???

I race all of my and wifes cars. Wifes 13 gt was tuned with 93 pump (e10). Mine are all around 10.5-1 motors. I also race the pro street car with 93 up to 150 shot. Just wondering which was better? We have both the 93 or 91 nonoxy available. Thanks much
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1970 mach 1 with mild 408w
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1970 pro street fastback with pump gas 427w
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