I currently run a 50/34 with a 12-27. I've had the opportunity to demo a Scott Foil and Fuji Altamira both with a standard crank during my usual weekly group ride. Now sure, there could be a placebo effect in place but I felt as though I could keep up much better with the group on the compact. My question is, can I simulate the gear ratios of a standard crank by changing the cassette while using the compact or should I just buy a standard crank and swap them as needed? I do not know what cassette the demo bikes were using.