New Steinway actions are actually probably less stiff than a lot of other makers'. A properly regulated action should be buttery smooth throughout--I recently played a brand-new Steinway D in a dealer showroom that had one of the silkiest actions I have ever played--not the least bit stiff. Also, I once played the late Arturo Benedetti Michelangeli's Hamburg D Steinway--this had probably the most perfectly regulated action ever, just miraculously effortless to play. I've heard that Vladimir Horowitz' older New York D had an amazingly light action--so light in fact that some people unused to such a light action found it hard to control. So you see, Steinway actions are really not necessarily heavy, just some of them that haven't been regulated to your taste.