According to Lady Flintstone Flex rating:
Stiff SF45 > DMCC light > TT30 > DS30 Soft
DMCC light has a stiffer base than TT30 due to carbon infusion. DMCC light highback is softer by design but has same material composition as TT30.
The following comment is my interpretation:
TT30 and DS30 base have the same composition but the TT30 will be stiffer by design due to Alpha base (allows more ankle roll). Note, Alpha base has inserts to stiffen flex if desired.
What is the flex progression for the highbacks? Like this?
Stiff ................................ Soft
SF45 > TT30 > DMCC Light > DS30
How would a stiffer highback soft baseplate differ from the softer highback, stiffer baseplate (I have an idea, but I'm interested in the design reasoning).