Following the suggestion of a fellow reviewer I ordered the 36A. Even though it is a tad looser than I am use to it fits and feels just fine. It doesn't twist or come up even through my most dynamic motions. Though I have no desire for a large bust it is very nice not to look and feel completely flat chested. It adds just a little to your profile. It does get a little hot, but it is not a big deal for those who are intending to really workout and sweat anyways! My only issue is when I wash the bra it is a little difficult to straighten the pads and fabric in the front so it is not bunched.
You asked for a sports bra that gave some enhancement instead of the usual flattening effect and we found a great one! Shock Absorber's Pump bra comes with removable pads that add just the right amount of shape using light padding while still giving you the moisture wicking sports fabric you're used to. Lightweight and quick drying. A cup fits both AA and A. 88% Polyamide/12% Elastane.
FIT TIP: These run snug in the band so we suggest you go up 1 band size if you prefer the sports bra to be fitted but not too tight (i.e if you are a 34AA or 34A, go up to a 36A).