I think the Studio Display is worth it, although pricy. The sharpness of the text and colors is a big jump up from my 2K LG Colorprime display that had 99% Adobe RGB. I prefer the 2K scaling since it gives the most space. 4K simply won't cut it as 2K won't look that good since macOS scales up to 5K and then downscales it to 4K, which causes a bunch of issues as described here:
Since writing about Mac external displays in 2016, not much has changed. LG, Dell, Samsung, and other display makers have either never catered for the specs many Mac designers and developers want, or they’ve reluctantly produced products that have been short-lived or compromised.
bjango.com
I never considered the nano texture version due to it being hard to clean and I don't have my monitor where sunlight hits, thus I don't really need anti-glare.
Also, 1080p 2x scaling on 4K is just way too big, and I hate 1080p resolution due to loss of vertical resolution, which mean more vertical scrolling. That is why I will never consider a 4K monitor, especially at 27" or bigger since it's a poor experience on macOS, at least for me. Apple may release a pro version of the 27" 5K display with HDR, mini LED, and maybe Pro Motion, but it will be more expensive than the Studio Display.