This works well enough for a first post back...
Believe it or not Nike has sports bras that go up to a reasonable size as does New Balance.
Nike Determination Women's Sports Bra hits up to an XXL, and New Balance's Tonic Crop hits an XL.
I am... What some might call "busty"... Think 40-44 G-J depending on the make. A 40GG British Standard Sizing...
I've tried a lot of different ones and I have actually figure out for me I need one that is tighter without cutting in - if you try one on and it is comfortable and a bit loose try the one size down and don't forget to do the jump test

. Basically holding me in and flatter against my chest. If I am jogging then I double up with a soft, properly fitted one under a sports bra but I've had good luck for most other activity with the Nike ones specifically.
Thicker straps are better for me as well, and I try for a higher neckline so it covers them on top more.