StarChoice used many dish sizes. But since he said eliptical, I think there are only 2
60e which is 32x18 or 32x20 (equivalent of a 24-26" dish. It will work with the strong stuff but weaker channels won't come in)
75e which is 37x27 (I have one of these...works pretty much like a 30"-32" dish)
The LNB's were either 2 stacked "beer cans" (one that was aimed at 107.3 and one was at 111.1). Advantage is both polarities come down the line so you can run multiple recievers with a satellite splitter. To get both satellites, you need a special multiswitch sicne there is only one output per satellite.
unstacked is the quad LNB. sees both satellites, 4 outputs with a built in 22k switch