I really liked this suit for this past year, especially being smaller-chested. I like ruching for camouflaging the parts of me that aren't quite where I want them to be yet. I know you asked for one-piece suits, but especially when I was heavier, I really loved high-waisted ruched two-pieces like this and this. The latter of the two I didn't keep because, again, small chested, but it was nicely structured. As uncomfortable as I was with the idea of two pieces, when I had them on, I felt amazing.