I had an opportunity to spend some time earlier this summer with an Iron Man racer, and he had a lot of good general information. After I described my riding habits and abilities, plus my size and athletic abilities, he recommended that I consider the AC 800 Crossfire. I see that they are no longer being made, but I can not tell if the design has just been renamed, or eliminated. How does the Crossfire compare to the M8 or the HCR (hill, climb, race as I understand)? Any input is appreciated...oh, I have had a '99 Powder Special 600 and a 2003 Switchback 600 and have been pleased with both although borrowing a Crossfire last year was a lot more fun. Thanks in advance!