I bought my first 2 Boosts about a year ago, and lived in it. I had to wash them a lot because I just couldn't justify any other bras. I have uneven breasts because that's a thing, and the Boost is just enough to even it out. I love that there are extended sizes, as I'm smaller chested but my ribcage is large. They are so soft, practically indestructible. The black is great, the beige is perfect and can't be seen under lighter fabrics (haven't tried a white shirt yet). I tell everyone about these bras, and have converted my mother finally.
My only critique, and it's a small one - please get different colors! I'd love to see some blues, reds, etc. Black is only so sexy, ya know?