Depending on how old your Samsung Smart TV is, if sound is all you are worried about, I would recommend just getting a sound bar. Samsung makes sound bars that would easily integrate with your TV if worrying about being tech savvy is an issue. The entry level Samsung sound bars are also pretty inexpensive, but would still be an upgrade from the speakers built into your TV. However, I would recommend the Sonos PLAYBASE or Sonos PLAYBAR over any of the Samsung sound bars. Now, if your Samsung Smart TV is older, and you also want to upgrade the TV for picture quality, apps, etc., I just bought the Sony 43-inch XBR X800E and a Sonos PLAYBASE for my office, and I think they pair well together. (I also bought the Sanus TV stand designed for a flat panel TV and the Sonos PLAYBASE.) The Sony TV is easy to operate and has a Netflix button on the remote, assuming this may be one major reason you want a new smart TV. Sonos is also a very user-friendly platform for people who are not necessarily tech savvy as one digital optical audio cable from the back of the TV plugs into the Sonos PLAYBASE or Sonos PLAYBAR giving you much better sound. The setup is easy and is done through an app. You don't even need another remote like many other sound bars. Plus, the Sonos system can be expanded easily for whole home audio if desired later down the road. I have a Sonos PLAYBAR, two Sonos PLAY:5s, and the Sonos SUB for my secondary TV room/rec room as I could not retrofit true home theater wiring for speakers, etc., very easily in my basement. I was pleasantly surprised how good the surround sound system sounds by pairing the Sonos PLAYBAR with the Sonos PLAY:5s and Sonos SUB. If you like surround sound, you could add the Sonos SUB and any of the Sonos PLAY series speakers (ONE, 1, 3, or 5) for rear surround speakers. They're all wireless and have their own amplifiers. All you need is a nearby outlet for the power cords. So, if good sound is something you desire, start off with the Sonos PLAYBASE or PLAYBAR and you can always add other speakers later on for a more realistic surround sound experience. I included links to the individual products below. Hope this helps.
Sony 43" XBR X800E
https://www.bestbuy.com/site/sony-43-class-42-5-diag--led-2160p-smart-4k-ultra-hd-tv-with-high-dynamic-range/5748210.p?skuId=5748210
Sonos PLAYBASE
https://www.bestbuy.com/site/sonos-playbase-wireless-soundbase-for-home-theater-and-streaming-music-black/5722400.p?skuId=5722400
Sanus stand for TV and Sonos PLAYBASE
https://www.bestbuy.com/site/sanus-premium-swivel-tv-base-for-most-32-60-tvs-black/5463304.p?skuId=5463304
Sonos PLAYBAR
https://www.bestbuy.com/site/sonos-playbar-soundbar-wireless-speaker-black-silver/8028043.p?skuId=8028043
Sonos PLAY:1
https://www.bestbuy.com/site/sonos-play1-wireless-speaker-for-streaming-music-black/1648801.p?skuId=1648801
Sonos SUB
https://www.bestbuy.com/site/sonos-sub-wireless-subwoofer-black/5589100.p?skuId=5589100
Two PLAY:1 Speakers (Black), PLAYBASE (Black) & SUB (Black) Package
Sonos - Two PLAY:1 Speakers, PLAYBAR & SUB Package
Sanus - Premium Series Swivel TV Base for Most TVs 32"-65" up to 60 lbs - Black
(1,977)