I have been looking for the perfect sports bra for a DD for a long time, and this is one of the better ones I have tried.
It fits well and comes in large cup sizes with small bands.  I think it would have fit better if my breasts were set a little wider apart, the middle piece in between the under-wires is smashing my breast a little bit.  But if your breasts are not set close together it wouldn't be a problem.  And I like the fact that this bra has under-wires at all, and they don't poke, but the material is a little scratchy beside the wire casings, although the casings themselves are very soft. For the hour or so at a time I wear a sport bra I don't think this would be a problem either, and it might improve after washing.  I wouldn't want to wear it hiking all day, though.  It doesn't  prevent nipple show through at all, but then again, I don't think I would want to work out and sweat in a bra with padded cups, so that's alright. The straps are padded, which is great, but I think with the larger cup sizes the straps should be a little wider.  This bra is high impact enough for jumping rope comfortably, and the price (on 34DD in black anyway) is pretty fantastic.
All in all, this is a good enough sports bra that I will keep wearing it until it wears out, but after that, I will probably try something else.