I've always had a large chest (currently a 36E), and I've spent an unknown sum of money in sports bras to keep the girls in place. Recently I've "caught the bug" and will be training for a  half marathon, so my older bras have been wearing out. I've always loved the Moving Comfort brand, and have several of their Fiona bras, which I like, but I decided to try the Maia on a whim, and let me tell you... WOW! Yes, there is some bounce,  but it is negligible and I barely notice it, because whereas other bras caused some chafing after 4-5 miles, the Maia bra does not. I just ordered 2 more because this has become my long run bra of choice.

It's not the "prettiest" sports bra out there, but it does a good job of separating the girls while still providing support.