Full disclosure--I got this in a 38 F, so clearly I'm busty lady.  And when I go to the gym and am running, or on the elliptical, or taking a spinning class, I want absolutely no bounce (both for vanity and comfort reasons).

This bra definitely delivers, while still being flattering (no uniboob!) and comfortable.  Seriously, it's perfect.  I'm hoping/planning to get a couple more.