Unless someone has a better idea, you might try this:
Look through the English language programming listed on
FTAlist web site.
When you find a satellite you like, then look it up on Lyngsat.com and check for the coverage map.
For example, let's say you wanted to try
old time movies on the
Whitesprings movie channel
(...and I mean crumbling celluloid , and faded colors...)
That's on the
129ºW satellite.
Scroll down to where you see the Whitesprings programming,then look to your right to the column labeled
beam.
Click on the
Ku link to see a map of the coverage for that satellite.
On the map page, figure out where you are and what the signal level might be.
On the right is a chart of dish sized recommended for that signal level.
Hope that's not too confusing.
(and that I didn't leave out a step)