Hi Toby, I'm late in responding but here is my two cents.. :-)
#1) I'm sorry I just don't like the hanging fabric in the front, IMO it takes away from your small waist. BUT with that said I love the back of it and I really like the strapless look on you.
#2) Is a very flattering on you, and I think when it's actually your size it will look amazing. However, I kind of wish the straps were a little thinner, I think with the thicker straps it takes away from your shape.
So I know I wasn't any help because I didn't really give an answer on which one I like more. It really is a hard decision. My advise, don't "force" a decision on yourself if you don't like things about each one, then you haven't found "the dress" yet. keep looking.. And more importantly keep your camera with you as you shop so we can continue to see pics.. :-)