Dish Tailgater is the one I've heard good things about. Have several friends with them that like that they are really lightweight and they can quickly move them around easily. I ended up repairing one friend's unit when a stiff wind blew it off the slide he'd put it up on. He'd put it up there for the extra height because it wasn't picking up a good signal anywhere on the ground around his 5th wheel.
But that's for Dish network. For DirecTV, there's
King brand...
Personally, what I have is the roof mounted DTV Winegard SWiM system that all I do is press a button and it deploys, searches for a signal, locks on, and I have satellite TV. If I want to, I can change the head and switch to DishTV for around $1500 or so. I love it because when I arrive at an RV park, I plug into electric, go inside, level the RV, extend the slide, and then press 'Deploy' on satellite and after I get back in from connecting the water, it's ready to go.
Years ago I had a big satellite dish and tripod and had to manually set it up...boy what a nightmare. Got used to it, but it wasn't easy even then...always something going wrong.
You kids have it easy these days, just hauling out a portable dish, setting it on the ground and going back inside to watch TV. In my day we used to just watch a pile of rocks for entertainment.