Originally Posted by D1andonlyDman

+1. This. The operative word for a proper steel frame is "resilient". A properly designed/made steel frame might flex a bit, but to me, it doesn't lose the energy from the flex on the downward power pedal stroke - but rather, stores it and gives it back on the rebound upstroke, in essence, acting like a stiff spring. It's this factor which has always made me prefer riding steel to riding aluminum, which may have less flex, but feels deader when riding out of the seat during a hard climb.