Definitely #2.
However, if you feel ambivalent about the dress at all, my advice would be to keep trying new dresses. When I finally found my dress, I just knew it was the one. It was completely different emotionally than any of the other 101,000 other dresses that I had tried on and came close to buying. There was no ambivalence whatsoever. I put it on and breathed a sigh of relief, like coming home. I think when you find your dress, the one that was made for you and only you, you'll know it. Meanwhile, keep the faith!
Best,
Leeza