Hi, we have a lcd/hdtv flat TV. We tried rabbit ears in the attic with the converter box. We get 13 channels, but not really. Only about 4 of them being broadcast from UNC in Wilmington, NC will come in steady. The rest lose their signal often right in the middle of a show. We are about 25 miles north east of the city of Wilmington. We thought maybe we should try a house antenna, but there are so many to choose from. HELP!