We had DTV for what seems like ever in our home. We decided to switch to Dish at home so we could get tv in the 5er with a portable sat and wanted an HD picture. The only way to get HD DTV I believe is to go with one of the permanent roof mount dishes or use a manual portable DTV dish. There are no powered portable sat dishes that offer HD with DTV.
Do I miss DirecTv? Yes. We find the software programming more complicated and time consuming than DirecTv. It seems to take more button pushes to do what you could do on DTV in just a couple. Like recording or deleting programs.
Might be subjective I suppose.
As far as signal loss. That's not really an issue if you have a clean view of the sats. Wouldn't matter with either. We've had cut outs with both.
I find Dish really easy to work with when starting and stopping service for the 5er dish. Just a phone call away.
We've had all 3 tv providers and I would rate DTV as the easiest to use, with Dish and Comcast about equal.
I just wish DTV would figure out how to get the sats setup so someone could make an HD portable dish. I go back the DTV in a heartbeat.