In the market for an LBD. A LBD? What's the proper article here?

A little black dress. I have a few black dresses, but I kind of want one that has a sheathier silhouette. I decided to do some online window-shopping, aided by polyvore. I pretty much only looked at Nordstrom, because Macy's site didn't cooperate with polyvore.

Sheathy silhouettes in plus (nordstrom) by neffbot featuring plus size coats

Which do you like best? I like the one with the faux-leather cutouts around the neck, but a close second is the sleeveless one with the metal studs around the neck. (bedazzler, anyone?)