I did well with the LY series, still play it the LY01 HOT craziest highest launching long distance monster used on the long drive circuit. Went with the 6.9 it's perfect for me, just need to fit myself for a good mid trajectory shaft now.
I agree totally with what stew says about the Crazy shafts being more tricky to fit. It's worth the extra performance when dialed in though. I ordered a 9.5 Ryoma non V-Spec, gonna stick the NOIR in it see how it goes next week.