1440p? I lost interest. I've laughed at the 2160p purists... until I got myself one. Since then I refuse to go back. At home I have the LG 27UD68P (27" 3840x2160 16:9) since 2017, and at work I'm lucky enough to use the LG 34WK95U (34" 5120x2160 21:9) since last January... I love them. They're actually the same height, so it's a match made in heaven:
http://displaywars.com/27-inch-16x9-vs-34-inch-21x9
The 34WK95U's been out for like 18 months now, but still not too many challengers... AFAIK the only alternative is the MSI PS341WU, which is the same panel with an MSI enclosure, essentially. We still cheer for these 1440p displays. It's a shame, really.
Also, when are NV and AMD going to finally put DP2.0 connectors on their cards? Until that happens, 120 Hz 5K2K monitors are out of question...