I am a 34DD and I wear a Sugoi Fizz bra (http://www.teamestrogen.com/products.asp?pID=17607) under a Sugoi Fizz tri-tank - this is a combo that has worked well for me. I think I have a Medium in both, but the bra might be a Large. I always wear 2 bras to run, so I am used to the mega-compression, and the tank-with-support plus bra underneath is perfect. Somewhat smaller busts could probably wear the Sugoi bra as a top on its own (it's made for that). The Sugoi dries very well and it has a very wide, snug band around the ribcage, so unlike most of my bras it does not ride up and down in the front and cause chafing. Highly recommend!