I would enjoy voting for Gingrich a great deal if it means getting to see him pown Obama in a debate. He is a convert to the faith as am I and frankly his past sins are not a concern to me.
Bachmann is the real deal, better than Romney, and I would be ok voting for her as well.. I don't think her "attacks" have been all that honest, however. She loves her talking points too much at times.
The only guy who at the end of the day would allow me to vote with a clear conscience, the guy who I know would always do the right thing (or at least try to) is Rick Santorum. Voting for him would actually make me feel good. I am convinced he is the best man in the field. He is a true Catholic gentleman and I believe he will govern according to his well formed conscience. I am not sure he can win because he might be too much of a boy scout. We can always hope.
I have heard some folks say that Romney is the only one who can win. Hogwash. I think he could lose big time because he is so incredibly uninspiring.