I've tried almost all of them. The roof mounts gave a lot of trouble, mostly thinking we were clear, when just a small branch could stop the signal. Went to winnegard carry out. A good system. Had to keep up with 2 wires. 1 for coax, and the other to a 12 volt outlet to power it. Now we have the dish Tailgater. Works excellant and the best picture we have ever had. I also upgraded my receiver. Since I have Dish at home, I rent the receiver they recommend for rvs. It cost me 7.00 per month, and I don't have to remove from the house. Best system I have had over the 10 years of RVing.