Im 6ft 2″. I ride a large defy carbon.. i have a 35″ inseam, short torso and long arms. running it with the factory 110mm stem. I used to have a cannondale synapse in a 60. geometry never felt right, changed stem etc and just couldn’t find the sweetspot. Tried a spesh 58 and a 61.. 58 wouldnt allow me to run enough seatpost and 61 was too big on the reach. I find the large defy ideal, right amount of seatpost and t/tube is 575mm which is perfect for me.. hope this helps! 😀