Digital television antenna - a simple solution

Just after the DTV changeover, we were parked here in Sparks, NV. Digital TV worked OK on the stock batwing. Now, we are again at the same park almost same site. Fancy new DTV antenna on new rig gets same or less stations even though many more digital stations are available now. Good to hear from others that the antenna marketing is just that...an attempt to sell "new improved" antennas.