This is an old post that was resurrected but it's particularly relevant these days with the changes in clubs. The level of technology, changes in design are more significant these days. Example: I bought a set of Ping G irons several months ago. I didn't notice it at the time but they're 1/2 longer than even standard graphite and the shaft is about 75 grams. And they have high bounce rates. Over time I learned that I could hit the long irons further but the short irons, i.e. PW and 9 were about 10 yards shorter. But a half inch longer increased dispersion with irons long irons as does graphite. I had always played steel. So, I was just fitted for a new set of MIzuno MP 18s. And guess what? The shaft optimizer shows that I was better off in light weight steel, and PS, regular is not always "regular" and "stiff" is not always stiff like most amateurs think. The properties of shafts vary greatly these days. My launch angle shows that I'm better off with irons strengthened 2 degrees. (That adds a little bounce but Mizuno irons typically have very little bounce to begin with). So, now I have irons that are the right length, less dispersion that go the distance they should. And here's an interesting note: I tend to be a little flat and Mizuno comes 1 degree flatter. And in addition shorter is also flatter. Ping had flattened my irons but that added bounce, too much. Those Mizuno MP 18s look a lot like old MP 57s which I loved at address but were not very forgiving. Thanks to changes in design and technology these are very forgiving.