Well, you could do the math and see what could be more affordable for you.
Multiple dishes mean, extra LNBFs, Switches, and Wires.
Number of satellites is limited to the number of dishes hooked up
Fast channel switching between satellites
Motorized dish, the only extra cost is the motor.
Number of satellites is quite a few in the USA. The Ku band satellites are more than 20 (see
www.lyngsat.com)
Slower channel switching between satellites since the motor needs to move the dish to the desired satellite.