Since I live in the mountains and am not getting any younger, I've decided to switch over to a compact crankset for the lower gearing. I'm leaning towards the FSA Gossamer MegaExo set up or the new Shimano 7700 crank. Both are integrated sysems but the FSA is about $100 cheaper. I'm also considering a regular BB set up (ISIS/Octalink) with possibly a carbon crank. It all boils down to what shifts better and weight (minor consideration). Your recommendations/suggestions would certainly be appreciated.