If you have money, I would recommend AppleTV, especially if you have an iPhone. It’s by far the best platform in terms of not being solely an advertising vessel and sucking up your data, and integration with the iPhone even just out of the box is pretty great. That said, they’re the most expensive by 2-3x.
Runner up is def Roku, which is much worse, but still pretty good.
And then there’s me with a Fire TV, mostly because I buy them when they’re $25 for the max fire stick config, and you can automate through the android debug mode. So when I want to use the device, I rarely use the main interface, which is extremely garbage.