I'll play...lol RC...I'm not short on blab either as you know
More disinformation from bore-troll. The SLX being better suited for bigger riders and frames is a patently false. What a surprise. The only advantage of progressively higher yield strength steels is the frame designer's ability to reduce wall thickness to derive the same section modulus which results in a modest weight savings period. A step further, may times lower grade steel frames have better fatigue life than higher tensile frame not only because of controlling the extrusion of thinner and harder wall during tube forming but welding higher grade steel tubes is more challenging as well.
Incidentally the same challenges exist within the Reynolds family of steels as well. The cost differential of higher grade steels is in the refining not in the physical materials within the steels. Frame designers adjust tubing wall thickness and diameter based upon frame size which typically correlates to rider weight...based upon material chosen. A higher grade steel therefore does not necessarily make a stronger frame for a bigger rider...a myth...it is in conjunction with frame geometry and wall thickness chosen. A recreational or club rider is actually better served to have a bike with a medium grade quality steel versus the highest end stuff for the above reasons...no value added.
George