Contrary to lots of other opinions here, I bought a 65" Samsung TV at the beginning of covid and I sincerely don't have any significant complaints. The remote is easy to use, launching apps is straightforward, connecting an ARC soundbar was no problem, nor was connecting a Chromecast and an Xbox, and it "just works". Every once in a blue moon (maybe twice a year-ish) I've had to power cycle it to fix a wifi connectivity issue, which may well just be a result of DHCP lease expiration on my network.

I have a modern Sony Bravia, too, which is running "Google TV" natively. On the plus side, the UI is just about identical to what you get with a Google TV dongle (which I also have, plugged into an old 32" monitor in front of my bike trainer), but it's also a really heavy interface that's also increasingly rich in ads. If your household is like mine, and holds subscriptions to a half dozen or more streaming services, some of which are bundled and some of which are either discounted or comped via entirely different subscriptions (mobile phone) or membership (credit card), it's really not helpful to have Google show me subscriptions I might want to add-on to my Google TV sub, nor do I appreciate seeing ads for content from things I don't subscribe to. Also, the Sony remote has about 50 buttons -- not a fan.

All things considered, I end up having to fiddle with the Sony TV far more frequently than the Samsung one, usually because of network or app issues.

We have an old Roku stick plugged into an old tv in a spare room, too, and it's almost intolerably slow. It's primary use case is to plug into our projector for backyard movies in nice weather, so I keep it around, but man is it dog slow.