The sky high fuel prices lately have been giving all of us headaches. Instead of opting for lower octane fuel as a way of saving $$$, may I give you another suggestion? If you do not know already, you can check out www.gastips.com
and see a comparative listing of the price of gas offered by the gas stations in your area. The service is for Canada only, and I think it does cover Ontario. I usually check it out, especially durin' the summer when the prices were VERY high, and end up finding high octane fuel at a price comparable to regular at most stations. Hope this helps a bit with your problem.
<- WaVe & DaNCe the DiScO DuCk if you spot a '95 black pearl/black Mercedes-Benz E420!!!