I install these at work and I owned one for about 6 months. The LG OTA is the LST-4200a. I believe it can be found for under $300. In my own house I used a Zenith indoor UHF antenna. The local towers are approx. 15 miles away. I had no problem pulling in a signal. Other parts of town needed a larger antenna either on the roof or in their attic.
Hope this helps,