For office applications, this UHD monitor performs well. If value is important to you, you likely won't be disappointed.
tl;dr
When the work you do daily requires a full-time commitment to being in front of a screen to do your job, then the characteristics of that screen can have a substantial impact on your productivity, health, etc. Having used a "standard" HD monitor for quite some time at work, I was starting to find it to be too constraining and difficult to work on. I felt it was time for an upgrade to a UHD/4k monitor.
After some research, I settled upon this model, as it scored well on use in an office environment (according to rtings.com), it had consistently high reviews, and it was priced attractively here on Amazon. It also included speakers and a versatile stand, which were nice additional perks that I thought could come in handy. I took the plunge and have not been disappointed.
This monitor has met or exceeded all of my expectations for office applications. The picture is clear. I have ample ability to control brightness, contrast, etc. And the refresh rate remains at 60Hz as long as the attached device can support it. The stand allows for all the control that I could ask for in positioning the display, but I've since attached it to a desk-mounted monitor arm which I also really like. I should also mention that having 2 input channels has been very convenient, as it has allowed me to use it as a shared display between different computers. In a pinch, I've even used the speakers on a few occasions; they're not very good, but then again I don't expect them to be. Also, I have used it once as a monitor for a video game console, and I was quite pleased with it. Again, the audio was sub-par, but the picture (including refresh rate) was excellent.
For the value, I've been really pleased with this monitor so far. Since I use it primarily for office applications, I can definitely recommend it for that. And as a general-purpose display, it seems to perform well and should not disappoint much. But if you want something that will perform optimally for gaming (especially with high refresh rates), then you will probably not be considering this to begin with. Also, if you want something that has great built-in speakers, I recommend using a TV instead.