I'm a Dish Network fan. If the install is done correctly then you don't have to worry about losing it during a storm.
They have a ton of HD channels, including a few that Direct TV does not have, which I enjoy. Check out both lineups and see which one you like best.
Also, x2 on comparing the best deal.
I have 1 HD dual tuner and 2 additional HD single tuners (so, HD in 3 rooms and SD in the fourth), with the "upgraded" channel lineup and HD programming, no movie channels and no DVR. It's like $80/month.