It is great to have you here!
I once bought one of your Hobie 21 square top mainsails (Giles delivered it to me personally) and that sail convinced other guys here to buy from you as well (SC17, SC19, etc.)
Unfortunatelly, so far I received no reply from Arnaldo, but (correct me if I am wrong) what you said is not in direct contradiction with what he said.
I think you said more or less that each sail cloth has its weight, moduli and durability features and the best sail is the one that, using those features, results in the best compromise. Then you gave examples.
Mainly, what Arnaldo said is the following:
a) rigid sails (I think he means those constructed with higher modulus cloth) are more secific to the wind strength they were designed for, then a more flexible sail.
b) Rigid sails (here I think he means 3DL and tape drive) do not keep their shape as long as it would be expected after they leave the mould.
Do you agree with those two statements?
THANKS!
Luiz