There was some discussion at one time about The List (see top of any page).
I thought all the C-band listings were confirmed by Iceberg on a 6' BUD.
Havent paid attention lately, so that may not be true.
Never did hear what size Ku dish was required, though 36" is comfortable on 99%, I think.
Would be good to know.
edit: there IS one additional fly in the ointment.
That would be your location.
Satellite signal intensity is not constant across North America.
There are signal-level maps, but they are only a guide, not a guarantee.