I regret buying my Samsung smart TV. I should have bought a larger "dumb" TV. Naturally, the geek in me wanted a smart TV as it sounded very cool. Once I started using it, I realized what a waste it was. The reality is, there are a few apps that one would actually use. The most popular ones being Netflix and YouTube. Netflix and YouTube worked, but their interfaces were very slow and searching was a pain. They actually updated the software not long after I got the TV, but it was only marginally better. 99.99% of the other apps were garbage and not worth looking at. Most were useless, some that had potential, but were so limited in functionality or speed, that they werent worth using, and some just didnt work.
I ended up just grabbing an old laptop that I had lying around and connecting it to the TV via HDMI. That coupled with a wireless keyboard with touchpad and I had the full power of a computer, rather than the limited abilities of a "smart" TV. There is no comparison between a computer and a smart TV. With a computer you can do anything, with a smart TV you can do a couple things... poorly.
In addition to that, you have to be careful. My office bought three smart TVs for some conference rooms. I want to say they are Panasonic, but Im not 100% sure. I wanted to put Skype on them and googled the model and saw that that model did support Skype. So I went through the menu trying to download the Skype app, but couldnt find it. I wasted a ton of time and then ended up just calling for support. Support told me that if the TV didnt come with Skype preinstalled, there was no way to install it... or any other app. The smart TV could not download new apps, just updates. I was amazed... So be careful if you are going to buy a smart TV and make sure it can actually does what you want.