This is, hands down, the most supportive sports bra I've ever tried.  I'm not particularly large (32C), but I couldn't find any other bra that did the job as well as this one.  It does give a bit of a uni-boob look, but I don't mind it that much.  My only real complaint is that the band doesn't extend far enough down the ribcage, which makes it hard to wear a HRM strap.