I previously had one of those flat ones that was powered. I had to put it in certain places and positions to get all channels. In particular, I couldn't hide it behind the TV. But even with the flat antenna in the open, the signal would still sometimes break up. The Core Innovations ball seems to get all the channels while sitting inconspicuously on the shelf behind a vase. It's much more unobtrusive. This is working better for us than any flat ones that we've tried.