I finally got some record 170mm cranks, so I suspect that will make both De Rosas a lot more enjoyable for me, especially the Primato. The Primato is about a 56.5 cm ST, ctc, which is pushing it for me, and the long cranks really affected the ride. 170mm should be a lot better. It has a 56cm ctc TT, which is just right with the 100mm stem. The Primatos are just fantastic bikes...I love that mine has the chromed head lugs and chromed flat fork crown.