best bra for DD+???

Ok ladies, I'm in need of some serious advice. I need to buy some bigger bras TO accommodate my growing "girls", but I don't know which brand is best?? I'm normally a 34DDD at VS, but had to buy some at kohls that were more full-coverage. The kohls ones have gotten me through many months but now I've noticed my nips are so hard and big, they show right through these bras and layered shirts!!!! I need to go up another size anyways so if anybody could recommend a good brand, I would really appreciate it!! Needs to run large enough for 36DD or 34DDD