I have been using Sling Tv for the past two months. I have made and connected a fractal outside antenna for OTA broadcasts which gives a much better picture than cable. Sling Tv gives us HGTV for my wife and YES network for Yankees games for me and my son. My other son is a soccer fan so I have the Sports extra add-on.
Sling has been nearly perfect over the last 2 months. Customer service, via chat, has been a pleasant experience, first when I inquired whether I could get the YES network in the NY metro area and later, when Sling added the Sports Extra package (I originally added the spanish package because one of my sons wanted BeIn TV for soccer which was only offered as part of that, then was offered as part of the Sports extra package; when I discovered that I went to Sling and asked that the packages be switched, which was done immediately with no hassle at all).
When I subscribed, Sling offered a Roku 2 for free for those who paid 3 months in advance; I received the Roku within a few days and look at this as either free TV service for 3 months or a free Roku. I was also offered a choice: one device at a time only with Disney channels and ESPN, or 3 devices at one time with FOX networks and no Disney, ESPN. I chose the 3 device option, and we have had no problem with 3 devices playing simultaneously.
What I am not seeing in reviews and which I find very useful and valuable is the ability to watch Sling on multiple devices, and not just at home. I can watch in the backyard on an IPad or at my office on my PC, or on a phone at a ball field, or on my Roku at a hotel in another city. We are not tied to our home network and this has come in handy many times. Sling has worked on a windows 10 pc, a windows vista laptop, an IPad, and Iphones for us, all without a problem.
Sling has added several channels to my original line-up over the last 2 months, including NYC channel 4 NBC and channel 5 FOX (although I get both already with the antenna).
This service has been the perfect complement to the antenna and has the added benefit of multiple devices anywhere in the US. The channels play nearly flawlessly, and I have had only one short period where there was a problem playing the on-demand videos.
The menu once used and gotten used to is a breeze and easily adopted. We also are not missing DVR capabilities and don't really care whether we have it or not.
I haven't tried to cancel so I don't know about that aspect of customer service. But I don't intend on cancelling.
I don't understand the negative reviews. I recommend it highly. We just have not had any of the problems I have seen complained of. Perhaps the complaints come down to poor internet service and are not the fault of Sling.