Black Friday is one of the best times of the year to buy a new streaming device for your TV, with discounts available on Roku players, Amazon Fire TV devices, Chromecast, and more. Still, not all of these deals are worth the money, especially if your current streaming device is in good working order. Roku has a few device deals going on Black Friday, some better than others. Most folks should avoid the Roku SE, a $20 streaming device that will be available only in Walmart brick-and-mortar stores. This device is nearly identical to the $30 Roku Express, with the same processing power and 1080p HD video support, but it has a white finish instead of black and different shortcut buttons.