What's in a Name?

The "like" (not love) affair I was having with my manuscript's title has ended. Again. We're on to title #4 or 5 now, I've lost track. And now I'm threatening to change it again. I'm really really curious if I'm stuck with it now because I've submitted query letters to a few agencies with the current title, and I wonder if I'm allowed to now submit it under a different name to all the other agencies I haven't queried yet. I won't go so far as to change the title and re-query the ones who already passed. I'm not that desperate (yet). Perhaps I should title it, "Insert Title Here."

Anyways, I know I have a minimal amount of readers, but if you would like to vote, here are the new titles I'm considering.

In no particular order:

"Running on Empty"

"Broken Crowns"

"Choking on Fumes"

"Just Breathe"

"The Pit Fall"

"Truth"

"Contrary Mary"

It doesn't matter what the book is about...I'd like to know, though, that if you were browsing the aisles of a book store, which title would peak your interest?