getting implants

K, I know there are a lot of people against this but whatever, I have become very active , gained some muscle, lost some weight and a lot of it from my breasts.  I was a D and now I'm a B. I still have hips and have always been curvy  so I could go back to D which would be fun since I'm smaller.  I like the idea of not going to big because I consider myself atheletic. I like to jog, I do Muay Thai kickboxing, pole, ect. But I've been doing some research and looking into the idea of DD.  I read that DD is the most common US size, that often people wish they had gone a little bigger after the surgery is healed and I have been considering switching up.  I found some pics of a pre surgery size to a specific size after surgery- there was a lot of variations to look at that considered type of implant, where , and insertion site.  I also found a site discussing the great idea of feeling it out for a while with varying sizes of homemade rice fillers. The site had directions and all LOL.   I guess I just would like to hear about people's experiences in going bigger.  I am a confident person and am excited about this while I understand there are some gals here who would love to speak out about this negatively- to those of you.... know that I already know what you would say and thanks for realizing that this is not that type of thread.