If I were you, save your money. You have DSL and wireless system, forget about streaming video. Nothing will help.
In my rural subdivision the best internet I can get is ordinary DSL with download speed of 5mbps, upload 0.6mbps. At my wife’s suggestion, our visiting adult children gave us Apple TV a year ago, despite my doubts that we had fast enough service for streaming. When it did not work, they immediately determined that our Belkin Pre-N wireless router (F5D8530-4), which I had successfully chosen years ago for its ability to service the length of our house and deck, was not capable of working with the nearby Apple TV. Given that it was almost 10 years old, the kids concluded that the router was obsolete, and quickly ordered a new Netgear G54/N150 Wireless Router, model # WNR1000, “IEEE 802.11 b/g with 11n features.” They succeeded in getting it to work intermittently with the Apple TV, but we lost access to the internet at the other end of the house. Ultimately I realized this router is designed for a small house. I have retained and reconnected the Belkin, satisfied with watching TV via Dish and happy to be browsing the web at both ends of the house again. Apple TV is a low priority; however, now I want to upgrade our main TV sound with a Sonos wireless speaker system, and wonder if a modern router might be helpful for the required network, despite the poor internet speed. If I buy a state-of-the-art router (e.g. a Netgear AC1900 nighthawk R7000), are there any negatives besides wasting my money? Will this router tend to “waste” precious bandwidth sending extraneous info to imaginary clients and slow my basic laptop internet connectivity? Or more importantly, will I just waste time and cause frustration setting up a router whose potential speed is 100x my DSL speed, which already is exceeded by 10x with my 2005 model router? Ideally I would also connect wirelessly my Dish setup and my wireless DVD player, but I have avoided that to conserve WiFi bandwidth for computers and smart phones. We are also very unlikely to need a network for sharing info between our laptops or phones. Any thoughts besides appealing to Comcast and/or ATT to invest in infrastructure for our area?