Ya it sounds like you and I have the same issues. I ride on mostly flat to rolling hills in Florida with an 11-28 cassette. I did a little research into this, and it sounds like an 11-25 cassette would solve this problem potentially. The issue would then be getting my 200 lbs butt crushed going up hills. I wonder if cassettes could be customized to have a closer gear ratio from mid to high, and still maintain a 28 or 30 on the low end. Any one tried/able to make this work?