Sling offers a lot of stuff, including the best of general DirecTV. We use Netflix, Disney, and Hulu Plus the most.

Roku TV offers a lot too, but with some ads. They have a ton of older series and movies.

We also have HBO/MAX, Apple, Paramount, and more as paid apps, but don't use them anywhere near as much as Netflix and Disney.

Sling offers CNN, MSNBC, USA, TNT, and a TON more stations and movies/shows, a good half of what DirecTV does but without the crap fillers.

There's some overlap on available stuff on Sling vs ROKU, but both are great.

The ROKU is a one time purchase for the stick so everything it offers is free once you buy the stick.

If you want to keep the price down, if I was you, I'd get a ROKU stick and add Hulu Plus to your Netflix and open air channels.