These ''high tech" antennas seldom meet expectations. The best results are usually a combination of antenna height, being able to aim them, and of course proximity to transmitters without obstructions like mountains in between.
Where I am in NJ, I cannot get any NYC stations, too much bad topography. But I can get Philly, which is much farther from me, with a big yagi style antenna on the roof of my 2 story house, with amplifier and motor to turn it to precisely target transmitters. I don't use it anymore though due to my loathing of network TV.