I recently bought the Callaway ERC II driver off E-Bay. I was sceptical because it was a used club, probably because of esthetics more then anything. This club is super far off the T-Box, very well balanced. My other driver, Adams GT 10.5 degree titanium was sweet, this club is 15 - 20 yards longer. The stiff shaft was a concern because of my swing speed, 100 mph more-or-less, but no issue in the end. The 9 degree loft allows you to keep it long and low or up and away, depending how you want to shape the t-shot. The club has a unique sound when hit, a very solid “ping”, which needed some getting use to. Great hitting club.