I've been searching for a new sports bra and finally found the perfect one, thought I'd write a recommendation in case one of you is searching too.
It's the Panache Sports Bra.
http://www.panache-lingerie.co.....ports-Bra/
Really comfortable, keeps everything where it's supposed to be and doesn't make compressed uniboob at all. I tried it under my sport t-shirts and it actually looks comparable to one of my normal bras. It has wires to give support, but they are kind of flexible and not in one piece like with normal bras.
I normally wear a 30E, but sometimes 30DD fits better because I can't quite fill out the 30E. I had to go up a band size in this because it was too snug and went down a cup size too. I ended up with the 32D (so equivalent to a 30DD). BUT I really wear my normal bras snug in the band size and I know too many women don't. If you're one of the latter, I wouldn't size up in the band or you lose the support. If you're on the bigger end of your cup size you might not need to size down there either.
I haven't worn it IRL yet because I was down with a cold this week and didn't do any sports, but I can't imagine changing my mind about this.