After a long journey were I tried many different brands with AOC 1440p ~144hz IPS/TN panels, I pulled the trigger on the S2719DGF and got it yesterday - but sent it back immediately :/.
Here my summary in short:
pros:
- plain design (I really love the clean 'not-gaming' design)
neutral:
- the stand was a bit shaky when you press the menu buttons.
cons:
- washed out colours
- color calibration
- a bit of color banding
- backlight bleeding on the top and the bottom
- brightness and contrast were very low
- black levels are more grey'ish
I've compared the Dell S2719DGF (left) with the Asus PG258Q (right) with 100% brightness
https://imgur.com/a/vRj72xA
cheers