I currently have a tiny antenna that came with my TV tuner card. I get several channels and some very good even though I am ~20 miles from the stations. I am unable to get a good signal from two of the networks I would like to watch however. My question is, if I get a higher gain directional antenna, will I be forced to pick a clump of channels and only get those? Most of my channels seem to come from two concentrated areas about 45 degrees apart on the compass. Antennaweb says I need a high to medium gain directional antenna. Since I am able to get most of the stations with a 6inch stub do you think I can get by with an omnidirectional model? I do not want to spend a ton of money on an antenna.

How is this antenna (http://www.monoprice.com/products/product.asp?c_id=109&cp_id=10901&cs_id=1090102&p_id=4730&seq=1&format=3#specification) at monoprice?

My zip code is 29708.

Since I am able to get most of the stations with a 6 inch stub do you think I can get by with an omnidirectional model?

The biggest advantage will be mounting the antenna outdoors. It'll get more stations than your 6" whip, but I'd be surprised if you get everything.