Considering there are not too many boats with carbon rigs, unless one goes new as an option, not sure this would matter. UNLESS, one is looking at say Tarten or C&C, then some older models have alum rigs, newer carbon in the last 5-7 yrs or so. And those with options, not sure how many here in the states got carbon rigs vs aluminum, probably more th latter than carbon.
Not sure I would go carbon on my rig, the again......if I did the tall mast version due to the aluminum going......carbon could be beneficial...I think $$$ would get in my way before the actual issue of which I would do would occur.
She drives me boat,
I drives me dinghy!