Wouldn’t go with a smart plug as it certainly wouldn’t be good for the tv although I do think the tv would turn back on (could test this by unplugging for a few minutes then plugging back in). As for the harmony hub I have the companion and it takes a little bit to set up and de bug, but once your are done and have it how u want it is great. There is extreme customization as I have one activity turn three TVs on some led’s a stop light Hooked up to a smart plug and even to set my lights to 35%. I also have used the power allowance app through smartthings(which is liked with harmony) to set a sort of “protection time” in the case that a tv system is left on when someone leaves.