My dish signal has very rarely been interrupted by heavy rains over the past 8 years. It also never needs adjusting. When I moved to the "barn" 3 years ago I set up my DirectTV dish temporary on a 2 x 4 stand weighted down with bags of cement. Watched perfect TV for over a year before I finally mounted it up on the building permanently. And DirectTV technical support is outstanding. Really the only thing I have called for was to activate new access cards (with new receivers/TIVO unit I purchased). I remember when I moved in and got the new receiver set up and everything I had to call DirectTV at 10:00 PM on December 24, 2000 to get it set up. No problem.
I wouldn't even consider cable unless I could get internet on it. Turns out I am 5 miles from any town, so cable is not available.