I still recommend going with the ANT751. If you get it at Walmart, you can always return it if it doesn't work. I recently installed one in a commercial building just above the drop ceiling in
Manassas. I was a bit skeptical with all the metal surrounding the antenna, but it works well.
The multipath is horrendous at my location only 4 miles from DC & the ANT 751 worked well when I tested it here. 2 TV towers are visible from here & I have never experienced overload with any of the antennas used.