I live in Orlando. Even tho I can point at the antenna "farm",I am blocked by the side of the Condo and by trees.I have used most all omni-directional antennas,inside and out, but they were too touchy as far as getting a good signal from all stations with off-air HD(6). I tried the U-75 UHF antenna from Radio Shack and I found a "sweet spot" that gave me very good reception.Minimal adjustments.
I am using the Dish 6000w/local module for my HD.