Im, 5'-11" almost 6', on a 56cm IRO Jamie Roy. I am on a 140mm stem, seat about centered and a little back. 165 cranks. Im still fudging with the fit. Saddle is high but not bad at all, the reach is what I am working on. My other bike is a 60cm Cannondale Black Lightening, way too big, seat is real low in the frame, the reach is a bit long but ok. The 'dale tracks like a big pair of GS skis, descents are hot on it but its not the most agile thing in the world at that hight.
Milo