Great info, thanks. I've gamed an FW80 and ute n 'S', and could make them go left a little too much for my liking, so I'm kinda thinking a Crazy in '7.7' might be the way to go. I've been playing a Kai'li 60 in 'X' and loved it. I reckon a Crazy in '7.7' should be a good match for a Diamana in 'X'.
Regarding weight vs stiffness, I THINK my preference is lighter weight and extra stiff shaft, purely so that I can keep my swing speed up whilst keeping some modicum of ball control with the stiffer shaft.
Can't wait to try the 435 to see if all the hype is justified. It may not be for me though as I like a soft feeling face. We'll see.