I have about 500 boxes scattered around the country, looking to add more sites. I am switching product. Their support is nonexistent, you can't even send them an email. Every update they do breaks something. First came ads, then the new slingplayer installs into Edge instead of Mozilla which is my default. No way to fix this and no way to contact them about it.
Already started sourcing TMC. Yesterday I could setup a box from the web browser. Now I have to install a program to my desktop? You're gone sling.
Sling: a good idea, now surpassed.