I used the system for about 15 weeks. . my wear time varied from 9-17 hrs a night. Growth was minimal, yet just barely noticeable. Any growth is good at this point, though, so I am happy that I did it. I did notice that my swimsuit fit a little better.
It is a hassle in certain regards, but once you have a routine down, you get used to it.
Things Brava doesn't tell you:
Sleeping can be awkward. I slept on my couch for the entire time that I wore Brava, which really wasn't too uncomfortable at all once I figured that out. I definitely would not have been able to sleep without that couch.
Your breasts swell up after each wear time, so you go out in the morning with much larger breasts than what you go home with in the evening. Therefore, tight tops are not an option if you want to keep inconspicuous. Gotta keep it baggy.
It is itchy and can be sore if on too tight (the smartbox made it too tight for my comfort level). But those things went away when I stopped wearing the system.
I had a mark around my breasts. All day. These marks were there until several weeks after I stopped wearing the system. But they did go away.
You absolutely can nOt wear it in public, as the website infers. The domes are hUge. The smartbox is loud. and they make the sound of loud flatulence when you accidentally break a seal.
If you want to save many dollars, I would avoid the smartbox. They are a hassle, and you can suck the air out of the domes yourself through the attached tube, and cork it up. The smartbox itself is somewhere around $700 or $800, from what I understand.
Take good care of the domes. They will wear out eventually. DON'T wash them every day (as the website suggests to do). They lose the tackiness after a while.
that's all that I can think of for now. . .
(Sorry for being redundant. I have made some of these comments on a few other sections of this site already.)
OH, and ladies, I have also tried one of those generic rip offs of Brava. Same idea but MUCH cheaper. The domes were shaped stupidly and they were painful. No way they would have worked for me (can't remember what the name that system was

) So if you're thinking of doing this, I would definitely use the Brava domes.
Hope this is helpful. . Good luck!