LG Ultragear 27 Inches (68.47 cm), LCD 3840 x 2160 Pixels 4K-UHD Monitor, Nano IPS 160Hz, 1ms G-Sync Compatible, AMD Freesync Premium Pro, DCI P3…

Want to clarify two things first
1. This is in fact the 27GN95R. The version sold in India does not have sphere lighting. You can check on the LG India website.
2. It’s DCI-P3 98%, not 95% as mentioned in the title.

Can’t find any difference between this and 27GN950-B which is not being sold anymore except for the overclockable 160 Hz on this monitor. Not sure why LG would launch a new model just for that. They didn’t even add HDMI 2.1. Maybe some internal components have changed because they ran out or were upgraded.
But anyway, it delivers what it promises. No trouble doing 4k 144Hz out of the box on the DP cable I already own (Inicio). Just make sure yours has DSC support.

Out of the 3 options available at this price – Gigabyte, Samsung, and LG, I think LG is the best option. Too many reports of the other two having problems out of the box or developing problems within a few months.
That is unless you need HDMI 2.1 (if you want to connect to gaming consoles) or KVM.
My unit is pretty good although both lower corners I feel are not uniform with the rest of the screen. Not noticeable unless you are looking for it. I don’t know if it’s because of a brightness gap or IPS glow.
I didn’t find any review coverage for this monitor but since it’s identical to 27GN950, I assume what’s been said about that applies to this one as well. So not going into too much detail.

I already own LG 27GL850 which has pretty similar specs (DCI-P3 98%, 10 bit, Gsync compatible) but 2k resolution. So the image reproduction in particular didn’t blow me away. There is no real improvement in HDR400 vs HDR600. You will not get a good HDR implementation at this price.
If you are going for this over, say 27GP850 or any other good 2k monitor, keep in mind that you are paying almost 1.5x the price just for the resolution.

Is 4k worth it in this screen size? IMO yes. Especially if you are used to high PPI displays like Macbooks or other modern laptops.
1. It’s very noticeable as soon as you boot the system up. Even going into Windows settings you will notice that the text is much more crisp. This is the first time I didn’t see any jagged pixels on an external screen. If you do more than just gaming, it’s worth it.
2. In games, well I think it’s noticeable in two scenarios. One – if you are playing a game where you are admiring the view a lot, like RPGs. Two – if you are playing a game that involves a lot of text i.e. your character’s stats, shop menus, etc. Example Dota 2. I don’t think you would notice it if you are really engaged in the game, for example, first-person shooters.

Display scaling in Windows is by default set to 150% and has not been a problem except for a few select apps. Full HD or higher resolution videos looks just fine, again no issues with upscaling. FYI there is some annoying power saving mode turned on out of the box which dims brightness automatically, you can turn it off in the menu.

If you are upgrading from >= 24 inch 1080p, even 27 inch 2k will be a worthy upgrade. If you already own 2k 144Hz, I think go for 2k 240Hz if you are more into competitive games and 4k 144Hz for casual gaming + productivity.