I am considered a new customer with e*. I would need a superdish 105 for my locals. My question is, is their a signal advantage for having a dish 500 for the 110 and 119 birds and a superdish pointed directly at the 105 bird? If so, would an installer do this if i already had a dish 500 on a pole when he got there for the install? I saw on ebay you can get a dish 500 for around $25.