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I got this one from Amazon about six months ago and I get tons of stations I didn't even know where on air. amazon.com/dp/B006YVFGAS I'm in G'town, and it's on the first floor at the back of the house, but it has no problem picking up everything. (There may be a newer version of this model; it was recommended by some site like Wired or Gizmodo.)
I got a Micron XG and interestingly when I removed the amplifier out of the equation I got all the channels perfectly (w/ the amp a couple channels seemed 'broken'/poor). http://www.amazon.com/Antennas-Direct-Micron-XG-ClearStream-Amplifier/dp/B006YVFGAS/
heh, that particular one is definitely a big bastard. They have smaller ones though that, as I understand it, work similarly well. This one, I think, is quite a bit smaller, but I get the impression that it's a lot less forgiving if you point it in the wrong direction. Since there's almost nothing in any other direction for you, that might not matter too much.