No 87 here. 93 only and sometimes I have to add octane boost. But I need a new tune, so I shouldn't really chime in.
Still, at 20 cents more per gallon, if you were put in 15 gallons of 93 (aren't we only about 14 gallons?), you would be talking 3 dollars more.
If you're blown, 3 bucks ain't that much to protect your investment/s.
I'd rather buy generic mac-n-cheese which is the same, than cut back on octane.