Dropping diet sodas to be an example seems like a great thing to do Jeremy but this whole conversation seems a bit odd to me since it seems that bunch of these guys live off of ephedrine/caffeine stacks anyhow. Getting rid of a soda ain’t gonna help the problems that you cured when they’re popping a few pills equivalent to 6 Mountain Dews. Know what I mean?
I've been between 7% and 14% and drank sodas, sometimes in excess, for the same reason you did. I needed the caffeine to keep my sorry tail awake while working two jobs and lifting weights in between. I never noticed a big difference either way and I did the recommended insulin sensitivity testing from the Berardi article both times and didn't see any substantial difference either so go figure.
Of course, your results may differ, blah, blah, blah.