The tires should be the same outside diameter, regardless of the wheel, so the revolutions per mile shouldn;t be a factor.
The 18" is 727revs per mile, the 17" Bridgestone is 731, that's barely a measurable difference.
I prefer the 18's because it's a little bit less sidewall flex, and for me, that means greater control.
The other side of the coin is, the 18's design really compliments the car.