I purchased the A flex and cut it down 1" under standard which basically fitted for my height. Chopping the A flex down 1" also made it into an "R" flex, perfect for my 88 mph swing speed. Then I had it mounted on my Lynx 08 9.5 Parallax. This was the advise of my club builder. I was a bit skeptical at first but it turned out to be a sweet combo! The ball flight is piercing and my shot accuracy increased! My distance average is 210 and 220 with a good swing. I'm now on the fairway 90 percent of the time.