Personally I would wait and evaluate what is available in 4K that you want. Also, the LG doesn't have that great of contrast, so picture quality isn't great for a TV. If you are looking for just a monitor though, then its the best 4K option at the moment if you don't notice the lines going through it.
What are those lines?
I am evaluating possibility of using 40" 4K TV as computer monitor. So there is LG with lines and there is Samsung without lines but not so good viewing angle. I think viewing angle is important since when using 40" as computer monitor there is quite
big angle near the edges. LG panels are known to have better viewing angle.
Wo which option is better in the end?