#1 and #7 are very close in my mind! I think #7 "pops" a little more, which I like; but #1 is a bit more elegant. I think I would be happy with either choice if those were the only two options.
I think the rooftop in #13 is very visually appealing, and I like that it could be run as an advertisement by itself. I'll need to consider if that would be too tall to use as a standard website header or stationary logo. I don't think it will be, just a consideration.
And #14 definitely has potential, because it's possible I could take the picture part to use at Facebook and Twitter icons. I don't think I like that house image though ;) Maybe there's a different house type to put in that location?
Very impressed - and thank you for making the adjustment to the title!