I think in most situations an omni is not a good choice price/performance wise. Most of us have most of our stations coming in from from the same tower or same mountain so an omni is wasted. It picks up signal (and noise and ghosts) from all directions whereas a small yagi/log will have gain over an omni and pickup signals (and noise and ghosts) from only the direction it's pointed. From a gain standpoint omnis are way overpriced.