IMHO, you will likely get a couple of seasons out of the Radio Shack antenna before the weather kills it. ChannelMaster and Winegard are significantly better constructed, but with prices to match.
RS is strictly self install. The others are available self install from online places, or can be found at many local dealers who will install for you. Again, $$ vs hassle.
I'm only planning to put this in the attic to replace the one in the attic now so weather isn't a concern for me. Thanks!