I already have a Mibox S and while it's working fine, I noticed that some apps are laggy (ziontv, iptv smarters, sometimes netflix) but a simple reboot fixes it. Chromecast also stopped working but I don't really use it anyway. And then there's the 5.1 sound issue. I've heard great things about the original Shield tv but I'm not sure about the 2019 version since it's pretty new, but the upscaling feature looks pretty cool and it seems to have a fast processor too
Yes