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Feeling good is not the same as measured performance. There is truly no measured performance difference between the cheap brands and the expensive brands except the marketing overhead. If you really want to dig, you'll find the best thing to do is alternate brands because the additive packages are antagonistic, so running a single brand is actually the worst thing you can do.
You have your opinion and I have mine.... I will leave it at that.
If Shell is around, then 76. Almost all the time is Shell though. I found that I get better gas mileage with shell. All the cars I had can attest to this.