I would say get 1440p 144hz instead. Otherwise i would say either of these. 1 is IPS and one is TN, IPS Panels produces much better colours on screen but has a longer response time. I personally would go for IPS.
IPS:
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TN:
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Kind regards

would be nice to know your specs. If anything if you have a budget that high you can get top of the line 1440p monitors or ultrawide 4k/1440p.

You could get this and be done with it;
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Just a fairly cheap, decent 4k panel. However, it would be useful if we knew what your specs are and what you plan on using your system/the monitor for.

13 wrote You could get this and be done with it;
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Just a fairly cheap, decent 4k panel. However, it would be useful if we knew what your specs are and what you plan on using your system/the monitor for.

i have an i7 6700k GTX 1080 SLI & windows 10

13 wrote You could get this and be done with it;
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Just a fairly cheap, decent 4k panel. However, it would be useful if we knew what your specs are and what you plan on using your system/the monitor for.

Going to add onto this.

I own this monitor and it's probably one the best 4k monitors I have used within this price range. I own a Dell P2715Q as well for a 4k monitor and the corners have some terrible back light bleeding when the background is black; be that a dark background, starting the PC up or gaming. I've also used the Acer S277HK in the past and I had to replace 2 of them within 7 months. One the monitors just shit out completely on me and the other started having a blueish-black marking form in the middle of the screen; which apparently turned out to be one of the capacitors starting to overheat and causing burn marks.

The LG monitor on the other hand has been going almost 8 months strong without a single problem. Have not once seen any sort of back light bleeding and if there is any, it's so minuscule I don't notice. No dead or stuck pixels when I got it or even now. I will say I don't like the default stand for it, it isn't very stable and any minor desk shaking, be that fast typing or moving your mouse around a lot will cause the monitor to shake. If you have a monitor arm, I would use that. Also don't put the power adapter on carpet, thing gets hot and wouldn't be something I would want to be sitting on the carpet for several hours in the day. Other than that, colours are great, monitor size is great for the price, has a 5ms response time, IPS panel, has a headphone out port if you care about that, monitor menu controls are easy to navigate (love the little joystick idea that is used to navigate) and it's not too bulky. The only other 4k monitor that I would recommend over this is the Asus PG27AQ, but I'm not going to tell you to go spend over £1000 for a 4k monitor that can be vertical and horizontal, has a 4ms response time and a few minor atheistic on it when you can easily save yourself money with the one 13 linked you and still get the exact same 4k experience.