i am in the same boat as you.
i went dress shopping and bought one of the rack first day.
then i did what YOU ARE NOT SUPOSED TO DO.........i looked at other dresses............and now i hate the one i have.
Moral of the story, pick your dress and DONT LOOK ANYMORE.....
but its too late for us, we looked more,......so now we have a situation......
Hmm, i am with you......what to do, what to do??
But i think with alterations your dress is awesome, you are gorgeous with an awesome shape to you. I love the dress...
Remember you may love that 2nd dress pic, but you have NO IDEA what it will look like ON...........you really dont..........so i wouldnt go for that second dress unless i could try it on first.
tough decision,..............I say get the one you have now fitted and you will feel SOOOO much better about it now being "yours"....then STOP LOOKING AT BRIDE DRESSES...LOL
Hope it helps...