I’ve had both DishNet and DirecTV. I’m currently using DirecTV with Tivo and love it.
Reception and programming seems about the same with both services. The DirecTIVO is a major selling point though.
I had some consistant hardware problems with my old DishNet service. I’d often lose connection with the dish and customer service always told me the problem was in the switch or the dish itself and it would need to be replaced.
After I moved I had a new dish installed with a brand new switch and the problem returned. Sometimes on only one receiver,. then a different receiver. They could never track the problem down and always just told me to replace this or that. About that time I switched to DirecTV and never looked back.