dilemma...

As my Twitter followers know, I've been looking for a black or dark gray, jersey maxi dress, preferably with a racer-back (apparently I'm picky). My idea is that I want something simple enough for layering in the winter, and light enough material I can wear it during summer. Also, I need something that will be relatively easy to wear a bra with. A few of my readers were really helpful in giving me tips on where to look (thanks girls)! Below are my favorites but I need your help deciding which one is the best!

clockwise from top left- Vince, Splendid, Asos, Erin Kleinberg
Vince- I really like the wide racer-back but I wish there was a little more flowy-ness to the skirt.
Splendid- Over all this is probably my favorite but the fact that there is very little coverage in the back could easily become annoying.
Asos- This has a waistline I love and good straps but it's not exactly what I had in mind; It is, however, the cheapest option of the bunch.
Erin Kleinberg- This obviously has the most detail and it's the most expensive so I'm less inclined to get it. The redeeming factors are that I think the shilouette would look great on me and it has the best coverage of them all.

So the question is, which would I look good in while best matching my stipulations and not breaking the bank?....
Or should I make my own?