On a recommendation from someone here (MR?), we bought a latex foam mattress from flobeds.com. LOVE LOVE LOVE it. Way better than memory foam (which we slept on for two weeks, prior to our purchase of the flobed, while visiting my mil). Yes, I realize that you are mainly looking for the bed, not the mattress, but I can't not take the opportunity to put in a plug for this.
I am also in the camp of net weight loss and boob gain from pregnancy. I'm currently at a 38F, but I expect them to deflate when I wean, probably at least two cup sizes.
As for the weight loss, well, I started out hugely fat by this board's standards (I am the fattest person I've yet met here, by quite a long ways), so I went to only slightly less hugely fat. At least I have a decent ratio.
tm
