I think if you know what your doing ITS BETTER DOING IT YOURSELF
I would have to disagree with DIYS installs . Did my install and started with DTV around ~2000. I remember a lot of screaming from the ladder to my kids in the house "Got a picture now!!!...How about now!!! **%$#^". Finally did get it set-up. Then my brothers noticed the clear digital picture was much better than analog cable at the time and I had to go through the same nightmare helping them get set up.
When I switched to HD, the installers did a rock solid install of the new HD dish (might have been a small service charge). But it was a much more pleasant experience.
I don't see leaving Directv anytime soon. Two things I like about them. When a frequent storm knocks out our power and cable lines for a day or three I can fire up my generator at night and watch TV while the cable TV folks bond and tell scary stories.
The other thing I like is Sunday ticket.