This week, curiosity got the best of me and I am trying something out.
E85! So far the fuel trims and throttle have settled out and I'm feeling the full effect, It really feels like I am a gear lower than I actually am in terms of pull in the midrange.

This seals the deal for me on whether or not I was going to purchase a flex fuel system.
Also, small details, but these clear corner markers really change the look of the car for me and I am really liking it.