I ride a steel frame, which is apparently has the advantage of being compliant, but the disadvantage of being (relatively) heavy. Looking at steel frames with carbon seatstays, these stays seem to offer the advantage of weight reduction yet loosing nothing in the compliance dept. Aluminium frames - lighter than steel, but give a harsh ride. So add some carbon seatstays - possible weight reduction with reduced road buzz. So, on to full carbon frames. I'd think that this would give a lightweight frame, without any compromise in strength, but a comfortable ride. I think that makes sense, but misses the effect of the build of a carbon frame - which could be built light but very stiff if reqd. Would that be a fair(ish) summary of frame material/construction? Where does Ti come in the equation? Light, stiff, both ??? Can anyone shed more light???? Cheers.