Not Fly-Z's but recently aquired a set of 3100i/h and man they're nice, never hit anything so sweet, get a nice tidy draw, nice buttery feel off the club face, off centres are still playable and the ball-flight is something else altogether...
Will be looking too 'Cobra' for my next set although certainly not in any hurry to change 3100's for the foreseeable !...
Yeah I've only had mine for about three-four months so very much still in the early phase of the relationship where everything is all loved up and exciting
So far nothing negative to say and not expecting to find anything