you just need to calibrate your screen.
i'd argue you could buy a £150 screen and calibrate it properly using hardware it will be better than any non calibrated screen regardless of technology.
it's pointless talking about colours, black levels etc if you aren't calibrating your screens.
FYI i've owned monitors from £100 all the way up to £800.
I've also owned pretty much a top end TV for the past 20 years and upgraded every 3 years or so.
Currently rocking a Sony XF90 i'll buy an oled in 3 years time once it matures a bit more.
Yes and no.
I mean regardless of screen calibration, its not going to get rid of inherent flaws of technology.
Your IPS black levels are not going to magically become OLED level. Similarly your IPS glow is not going to magically dissapear with a calibration. I feel like by stating without proper calibration, you can't compare technology vs technology is just very very misleading.