Been thinking about E85 vs. 93 plus Torco. At this power level it's a significant investment in gear (different fuel pumps, lines, injectors, etc.) Not to mention the retune. The upside is that the Meijer's about 10 mins from my house has E85.
Some of the things guys have mentioned here like the water issues are definite drawbacks. I can see managing the fuel level for the times the car sits might be a problem.