Can't decide between a compact or a full-size crankset? Why not split the difference and go with the Shimano 105 FC 5600 mid-compact? You still get a full-size 130 BCD spider, but with a 52/39 chainring combo to go a little easier on the knees and make the hills look a little smaller.
Ultra-stiff Hollowtech II crank arm construction keeps the gram count down while providing unparalleled power transfer
Integrated spider means there's less ring-flex when it's time to drop the hammer
Strategically placed shift ramps on the chainrings mean that your front shifts will always be smooth and easy