I'm glad it worked for you. I have a Channel Master 4221 4-bay antenna, but I don't use my amp. I'm able to get ABC HD, CW HD (although only SD in Tallahassee), CBS HD, FOX HD, and PBS HD. Unfortunately, I don't get NBC HD because it broadcasts real channel 2. Call it absurd, but it's true! I do get stations 30 miles away from my apartment close to Tallahassee Community College) and CW is 6 miles behind my antenna. My antenna faces northeast and I made it stand on top of my suitcase.

But of course, I'll get myself a mounting hardware to make it sit on top of my dresser. I'm located in first floor.
I do have basic cable with high speed Internet from Comcast, but I don't watch basic channels, only locals, so, that's why I have my atenna just to get away from watching basic cable. I do get MyNetworkTV (WCTV-DT2) and WTLF-DT CW.
Previously, I bought a SharpShooter SS-3000 from Amazon.com for $30 (but the original price is $130 if I remember right). I have problems arming at ABC due to low power, even though it's 30 miles away, so with Channel Master 4221, which is an antenna picking up 45 miles away. I do get a good signal from ABC, but it took me some time to arm the antenna to minimize dropouts as much as I can, just to get a hold of station's low transmitting power.
With Channel Master 4221, I did not care about the asthetics, as in my opinion, asthetics kills performance, which comes at a higher price (again, my opinion). I guess because when I bought the SS-3000, my expectations were set too high. With CM-4221, I expect my antenna to perform better than SS-3000 (knowing that I don't expect to get NBC HD and I hope I can get ABC HD with a few dropouts), and I'm glad I got it.
For now, I don't really care about receiving NBC until Feb 17th. Not unless I have an antenna that takes up my bedroom space!
So anyway, my antenna is inside my bedroom, facing directly at the window. So the next time I move to another apartment, I better have to choose 2nd floor, if I can.
I do have a question about my Channel Master 4221:
If I decide to live in Orlando, let's say that I'll be living in an area that's 22 miles away from the station transmitters, which face at a 78 degree angle. Will my antenna be overkill? What if I live 15 miles away from the towers? I know that Channel Master 4220 2-bay antenna will satisfy that, but I just thought I could keep my antenna that I have.