The pros:
-Extremely fast shipping (3 or 4 days faster than what Amazon predicted)
-Great value - this was $30 cheaper than the same one I saw at David's Bridal
-Terrific quality - this is a nicely made product, it's not cheap or poorly constructed
-Comfortable both to sit and stand in

The cons:
The sizing is a bit odd. I'm a 34C (have been properly sized) and all of my undergarments are a 34C, so that is what I ordered. When I first went to try it on, I thought it was an A. You have to work it, to make it sit a little lower than what you are used to, then lean forward and get your chest into the cups just-so. Once you have done that, it will fit, support you, be comfortable, and be flattering. If you don't have it at the right level, it bulges, pinches in places, and has you spilling out. I could see this being a problem for women, especially those with "in between" sizes.

Additional comments:
I would definitely recommend trying it on with your dress, too. I bought this to wear with my wedding dress and made sure to wear it to my fitting. It fit beautifully underneath - I had a saleswoman AND the seamstress ask me if I was wearing a bra b/c neither could see it.

I'd also like to note that it does come down pretty far in the back. They have left you quite a bit of room to be able to wear this with low-cut and strapless dresses without it showing.

I usually hate strapless bras, bathing suits, shirts, dresses, etc. because I find them uncomfortable. They fall down and you are constantly tugging them up. Because this goes down and hugs your torso so snugly, it STAYS put. There is absolutely no adjusting or sagging. Where you've strapped it, is where it stays. I love knowing that my wedding night I can dance and twirl the night away without any worry of constantly adjusting and pulling up.