My wife used to need the best bras she could find. When we got married she was a D or DD cup size and a cheap bra would eat her shoulders up. Mainly, because she is very active portrait photographer with a lively hop to her gait and gravity and inertia can be a bitch to deal with.
ALAS ... she gave them up. It all went away as an investment in the health of our newborn children. She, now, doesn't fit in most C cup bras, but she's not comfortable in a D either. She still needs the high quality support equipment, though.
MODDED for spelling.