Plays 45.25" in my Epic Flash driver. Callaway adapter installed. Can include TM adapter from M4 line, I believe. Bought new in July. Very little play but the grip shifted, so I'm including a new grip too. No noticeable bag wear.
Probably just its IZ brother. I was battling the two of them, but the IZ was 6 SR. I loved them both. I'm not great at articulating shaft feel, but the DI felt smooth yet powerful.
Oh, and the color combo looks SICK in an Epic Flash head.
For whatever reason, I just put a more consistent swing on the IZ. Might have been a bit of added weight or a softer flex. I love the DI. Feel guilty about selling it, but feel guiltier watching it sit in a spare bag.