Meet the Fire TV Cube (2nd Gen.), which is faster than ever. The biggest improvement from last year's model is that YouTube and YouTube TV apps are finally on Fire TV devices, closing a giant gap in the platform's available library of content.As a streaming video player, it offers a fairly robust set of features and its brawny hardware allows for 4K HDR streaming - with the new model adding the Dolby Vision support it clearly needed.This Comprehensive...