I've owned them all, even the dreaded AppleTV devices, all gens. Anything I bought in 2016, 2017, 2018 is slow as shit and unusable. The Shield I got in 2015, still amazing. By comparison, it's the best investment by miles. It's sad. buy a Shield in 2016 for $200..... sticker shock, but you buy an Amlogic 8xx device in 2016, then in 2017 you buy another one because the first one only had 256 ram, and you really want that 512mb model with the higher clock, then in 2018 you get the refresh with1gb, then in 2019 you get 2gb and its still barely keeping up, each time about $60-80 *unless you buy a flimsy clone of a clone model that costs $35 off gearbest alibaba whoever that breaks after 6 months. And the whole time, that Shield is faster and more versatile, built to last. I know this resonates and sounds VERY familiar, especially to those who have been at the cord cutting since the 90s.
I have yet to find someone who dislikes the Shield. The temporary 4k breakage last spring seems to be the only issue that isn't part of the standard expected rate of defective models, and by comparison that issue really was nothing.
Also keep this in mind (not directed at anyone). People had their Xbox OGs on life support to do these things before the Shield came out. Seriously, in 2015 A LOT OF PEOPLE USED A GAME CONSOLE FROM 2001, not because it was super amazing, but because the competition was S H I T. Including Fire Sticks and Chromecasts.