After a 27" 1440p for a second display for office work at the moment, its hard enough for me to choose components normally not helped at the moment by so many monitors being out of stock!
It really depends on the other specs you require (f.ex. in terms of adjustability etc.).
At home (using now), I have a Dell S2719DC which suits me to a tee. It's an IPS-panel, which means it's got great viewing angles, it's beautifully sleek and slim, with thin bezels and connects via. USB-C or HDMI. It also has two USB-A ports, which is great if you're lacking USB-ports on your laptop or stationary. I'm connected to my stationary via. the USB-C, but you can also use this one to connect and power you laptop (depending on the required power of your machine).
The only limitations is the physical adjustability. You can only tilt it up or down. For me that's not an issue, as I prefer looking a bit downwards anyway. There is also no built in camera or speakers.
https://www.dell.com/en-us/shop/dell-27-usb-c-ultrathin-monitor-s2719dc/apd/210-aqpv/monitors-monitor-accessories 
At work I'm using dual Dell UltraSharp UP2716D. The greatest thing with these is the fact that I can adjust it up, down, tilt or even twist it to 90 degrees, which can be useful when reading long documents etc. You also have a lot more connectability in terms of ports, but no USB-C connection.
https://www.dell.com/en-us/shop/dell-ultrasharp-27-monitor-with-premiercolor-up2716d/apd/210-aggp/monitors-monitor-accessoriesI know there are tons of other options out there, so it really depends on what you're after and willing to pay. And of course, what you will use it for. If it's only for work, these will do just fine, but if you're planning on gaming as well, I'd look for some with a higher refresh rate etc.
