To address your question, I think they’re all “smart” now. I ended up getting a low-end Samsung 4K a few months ago and it’s been good so far. It starts up very quickly, maybe 1-2 seconds. We use it exclusively with an AppleTV because of privacy / advertising concerns that have been raised. I’m just waiting for the day when all TVs require a working internet connection and we have to start hacking their hardware and software to protect our data.