I have a 55" TCL Roku TV that I bought during that Amazon Prime Day sale thing last July. It was something like just under $350 with free shipping and included a TCL sound bar.
My fiance and I had been mostly looking for an excuse to move the 55" Samsung SmartTV I bought on black Friday in 2014 from the family room to the master bedroom to replace a POS 32" Vizio flatscreen. On a side note, if you don't go with TCL, at least stay away from Vizio...
I can really only compare it to the Samsung it replaced, but here goes:
Pros:
-I've been a big fan of Roku stuff for a long time, so finally having it built into the TV and not taking up an HDMI port was huge bonus for me
-Speaking of HDMI ports, the TCL has 3, while the Samsung only had 2. They're also oriented better going in sideways flush with the back of the TV stacked on top of one another the long way but spaced out so it's easy to figure out what's what. While the Samsung's are the opposite, going straight into the back on the TV and crammed right next to each other, requiring more clearance from the wall and more hassle to identify, plug or unplug cables
-I'm certainly not a trained eye, but the picture doesn't seem any different
Cons:
-Sounds quality from just the TV is noticeably not as great as the Samsung and doesn't go nearly as loud. The TCL soundbar corrects this, but brings some frustrations as far as using it, which I'll cover next...
-The soundbar has a zillion different ways to input the sound from the TV. Without going into it's menu, the type of input is only indicated by the color of a little LED light on the front of it. It's easy (especially for my fiance...) to forget the color for the input you use.
-Now I bet your asking why not just leave it on the input you use? That's because despite having it's own remote with a power button and volume control, the sound bar automatically comes on when you turn on the TV. If you shut it off (using it's own remote), it just turns itself back on if you change the channel or something with a different remote. The sound bar automatically integrates its controls into our Comcast cable remote where it uses the up and down arrows used for cable menus for it's volume. If you scroll up on that remote enough while surfing the guide, the sound bar will keep getting louder. I spent a whole bunch of time when we hooked it up trying to figure out ways around this without success. We just switch to an unused input and change to the right one when we want to use it. Hence why we need to remember that LED color. Would be a lot better if they gave you the option to turn on automatically or integrate with other remotes instead of defaulting to it.
-Remotes are another issue. I like using the Roku remote that came with the TV because I'm so used to it as it's just like older Roku remotes, but obviously we can't use that for cable so we end up having three: The TV Roku remote, the Cable remote and the TCL soundbar remote. I can usually only find 2 of them and sometimes hit power or pause on the wrong one. That said, it probably wouldn't be an issue for most people since other than theNetflix/Hulu/etc. buttons, the Roku remotes functions can easily be put on the cable or another remote.
Despite all that, I'm pretty happy with it. Especially for as little as I paid.