The Moving Comfort Vixen is the only bra I've found so far that allows me and a couple of D cups to run comfortably and un-self-consciously, and isn't $50+. The integrated cup padding is a great feature that most sports bras are sorely lacking -- it prevents nipple show-through, and you don't have to deal with any stupid foam pads that you have to get back in place every time you wash it.

However, the more I wear the bra, the more I notice how scratchy and uncomfortable the straps are where they pass over my shoulder. The seam sits right on the part putting the most pressure on your skin, which might not be terrible, except that's also where the stiffer/coarser mesh material from the back ends. They really should have put the seam outside. So, while I can definitely recommend this bra for high-impact workouts, I also can't wait to get it off once I get home. I wouldn't purchase another one.