^ Chicagoland area here (DISH). I have 1 dish and get all the locals and the"Americas 200" (or whatever the number is now).
A second dish would only be necessary if I wanted 2 (I think) more local channels (1 Spanish language and 1 low end public TV channel), neither of which I care about. This is due to (for some reason) those routing through a different satellite.
And yeah, it's always possible for high winds to knock anything down, mine is on a 2nd floor apartment balcony, so it's kinda protected.
And like I mentioned earlier, I only lose reception when an extremely
powerful storm is first passing through, usually before the rain even starts. Just during that first dark front hitting. It just has to be aligned as well as possible.