As a consumer samsung TVs seem fine. Having looked under the hood, and having worked building apps for smart TVs (and collaborating with samsung engineers), samsung were some of the worst people that we worked with, and it's a miracle that any engineers can be bothered to build anything for tizen OS.

Among all of our partners samsung were easily the worst. LG had fantastic devs, I never worked with the android TV folks, but the OS was solid and easy to develop for. All the mediatek chipsets were all straightforward, just "here's the sdk" and go, it's only samsung that was a madenning morasses of kludgey code and arcane build systems.