Hi Sharon, I'm aiming for a new monitor as well, since my current one is failing (older NEC PA271W). I spent a lot of time researching the current options in colour critical (wide gamut) displays only to learn that there really aren't that many.
Then I also learned that there is quite a shortage of these things, I assume partly because of the pandemic.
In the 27 inch 2560 class you mention, the leading options for me (without insane price) are the Eizo CS2731 followed by that NEC PA271Q you mention. So you can't find it, you might consider the Eizo. That said, finding Eizo stock right now is really difficult.
If you decide on 4K in that size, the leading option I found is the Eizo CS2740. But it's also very hard to find. I tracked one down at RPI Imaging. One reseller said Eizo has limited stock if I put in a special order.
Hope that helps