I'm a 32c and as a runner i've tried many many different types of bra but always seem to come back to the shock absorber. The D+ max is my current favourite, nothing moves once it's on! One of the best places for sports bras is boobydoo.co.uk. It's really user friendly and there are lots of reviews so it's really easy to make an informed choice. It's one piece of kit you should never skimp on whatever your size. I hope you find what you want.