I love Moving Comfort sports bras; they fit true to size, wash well, and give great support.  I've found that out of the Juno, Maia, and Fiona, the Juno gives the best support for larger cup sizes.  That being said, I saw this newer model, and thought I'd try it out.  While it's not quite as supportive as the Juno (which keeps the girls jiggle-free), it still provides excellent support for my 32D size.  I've used it for high impact and plyo workouts, and it works well, but does give me a slight bit of bounce.  So, while it's listed as a high-impact bra, it's probably better for medium-impact activities if you're a larger cup size.

Also, Amazon didn't have my usual size, so I went with a 34D, and it fits just fine if I put it on the tightest holes.

Also, I've found that MC's racerback bras can be a bit of a pain to take off and on, but their website has a video that suggests undoing the front velcro straps to get the bra off and on more easily.  That really does help!

This bra also doesn't provide much "headlight" coverage since there isn't much inner lining.

Overall, I like this bra a lot, but, for higher-impact activities, I'll probably use my Juno or Lululemon TaTa Tamer bras.