CCarbo,
I'm down here in Madison and have recently had my SuperDish replaced (it had a failing "heat sensitive" LNB) with a Dish 1000 (I'm an HD package subscriber so I need it to receive content on 129).
At that time I had learned that locals (at least Madison's locals) were no longer on 121, but rather on 110, so a SuperDish was no longer needed. In essence, all you need for locals, is a Dish 500 aimed at 110 & 119.
I had confirmed this by looking up the Dish Local channels and their assigned satellites. With the exception (Eau Claire I think), all Wisconsin LILs are broadcasting from 110.
That said, should you be eventually looking at HD, you may just want to upgrade to the Dish 1000.
Regards,
Spence