Radio Shack does not represent state of the art, nor should it at it's mass market pricing. Considering the investment you have in your tuner, you may consider a more elegant solution.
Superior antenna designs are created by the industry leaders, which eventually trickles down to the economy brands. However, the precision cuts, plating and spacing of elements on the premium brand offers that last bit of performance that may be audible with a high end tuner such as yours.
One of the innovators in this business is Winegard. Their products are the latest evolution in design coupled with the best materials and craftsmanship. I use their ghost killer model in my own system.
Their web site offers many designs, one of which should be perfect for your need, depending on distance and conflicting signals in your area.
http://www.winegard.com/products/vhfuhf_tv_products/index.html