This a huge misconception about DTV. I never lost a signal during Gustav.
Correct. If your dish is pointed and aligned correctly, you won't lose signal.
To the OP, I'm assuming you never travel/tailgate and carry your dish and equipment with you? If not, then go with whoever gives you the best deal, I guess.
We have a 5th wheel camper that we take on vacations, and I have a secondary residence, so I have DirecTV and carry my equipment (I also have a spare dish) with me and setup everything so we will have TV everywhere we go. In my situation, I will never leave DTV.....I can have TV wherever I go. Plus, I can dish point and align better than most of those shitty techs.