Following up here. My new Dell S2725QC arrived last night! Unpacked it and now have it setup on a new Mac mini M4 Pro. I'm moving from a 27" i7 iMac so my expectations have been high, and not having to use an external monitor for many years I have. even a little nervous, lol.
Anyway, so far, I have only good things to report. The monitor itself appears very well made. The adjustments are perfect etc. Display wise, it looks very, very good. I'd say on par with my 27" iMac, but then again, my eyes are a bit old.
As far as issues. Zero. No flickering, smooth, clean. I'm running it at 2560x1440 120 hertz.Currently connected via USB C\Display port but may try HDMI as well.
Very pleased at this point and will report back again after using it for a few days.