I bought this bra back in May for my summer softball league.  I am size 34E and no sports bra has ever been able to keep me from bouncing.  This bra is simply AMAZING! No bounce, no pain - and it's pretty comfortable to wear.
The only negative is that you wouldn't want to wear it on a regular basis as it flattens you out. Other than that - if you haven't had luck with regular sports bras, try this one - it's worth the money!!