I think the "sane price" can be a bit of a tough one.
I'm using this one now for 4-5 years?
https://www.amazon.ca/dp/B07PX8JMJV?tag=pcp0f-20&linkCode=ogi&th=1
I got it on sale for about $330CAD, and I have seen it as low as $300CAD
27" is my limit.
120hz would be nice and able to go to 24hz for VRR
true 10-bit colour (no FRC) would be nice
DP 2.0 would be nice
Built in speakers would be nice
gloss/glass or very light AG would be nice
upgradable firmware would be nice
3-5 yr warranty would be nice
exterior power brick preferred
a good scalar that works properly
a good menu setup
I think I will be waiting several more years and even then probably end up with some type of oled braking the bank.