Apologies to the OP for taking this somewhat off topic. Love the PrimeStar dishes, I hope to get my hands on a few eventually.
Re: the comment about only having a motor instead of stationary dishes.
Sometimes due to LOS issues having 1 motorized dish isn't feasible. Case in point: My current setup. I have one motorized dish that sees from about 72W-101W. I did a pretty comprehensive site survey at my location and this was the best I could do from any one location. However, I can get other more eastern and western sats from different locations. I have another stationary dish at the edge of my property for G10R, because I can't get it from my motor location due to 100ft tall pines obstructing LOS. But if I put my motorized dish where my G10R dish is, I would sacrifice the eastern end of the arc. This is one application where a motorized dish isn't suitable for everything.
Another example is AMC-1, the skew is way off on this bird, and a motorized dish isn't near suitable since the motor skews the dish as it moves. Because of this, I have a Globecast elliptical dish dedicated to this one sat. Since the skew on AMC-1 is around 20 degrees off, I can only get ~15 quality on the Pentagon channel tuned on my motorized dish - compared to ~90 quality on my stationary dish, solely due to the skew being off.
And as Gary Z noted, sometimes you want a stationary dish (or a toroidal dish) because a motor takes a little while to switch between satellites, especially when going to extreme ends of the arc.