i loved my aluminimum 105 equipped cannondale synapse with carbon fork and carbon seatpost. no toe overlap problem and was always comfy even for 70+ mile rides. i have a carbon ruby now, but miss the feel of the road i got with the cannondale alu-carbon mix. it was defintitely more fun than the all-carbon, even though the carbon bike is lighter.. maybe i should sometimes ride that one again for a change? i am 5'2" and 47cm was great.