I did a bit of research and I couldn't find out which kind of monitor is actually the best in terms of "fitness" for DOS, Windows 3.11 up to Windows 98 computers.
I'm currently using my last CRT monitor on my Celeron DOS\3.11\OS/2 PC for the simple reason that it's the only spare monitor I currently have.
Too bad that CRT monitor has a huge problem which seems to become worse over the time: blurriness.
It's more likely a "dynamic" blurriness, because it's not always there, but only on certain occasions:
when I'm at the DOS prompt, the text looks fine if the monitor has been just turned on, but gets blurred off while it "heats up".
When I launch any game, the monitor always looks fine, it looks perfect I could play for hours and hours and I get no eye strain at all, no blurriness at all.
But... when I launch Windows 3.11, I must use it and close it within 10 - maximum 20 minutes because it's very blurry, it actually stresses my eyes, it's quite annoying.

Thus the idea for this thread, in which I'll share the different and various results I've come across recently with different kind of monitors on that very Celeron PC, without pictures because, first of all I didn't take any, and then no camera could be 100% accurate in showing the actual quality of the image clarity of the monitor (no point in using a capture card, it's a "monitor" thing...).

With my CRT monitor, which is the one I usually use with that PC because, as I said earlier, it's the only spare monitor I have, the image looks fine the first 10 to 20 minutes I turn it on and then gets very blurry on Windows 3.11 and quite blurry on the DOS prompt, but in game it always looks perfect. No blurriness at all, I played Terminal Velocity, Duke Nukem 3D, Blood and Doom for hours these days and it always looked great while in game.
With my LCD Samsung SyncMaster 205BW (which I keep as a secondary monitor on my main PC here), it always looks perfect. It never blurs, it never gets ugly colors, except I get some kind of "ghosting" effect on the edges of stuff. For example when I'm in the DOS prompt, and there's text, I get that text all ghosted on its right, fading away to the border of the screen, that's pretty annoying and it does that even here on my main PC with Windows 7 and 10 windows, menus and texts.
The only 100% perfect, without any issue at all, was my main monitor, which is an Acer T232HL, OLED HDMI/VGA/DVI monitor. It looks perfect, but... since it's my main monitor for my main PC, I can't keep it over there for my Celeron build.

It's a shame that the CRT got this problem, I remember using it just fine all this Summer and earlier and even before, and I never encountered such problems... I wonder if it's fixable.... or else I'll get an OLED (since the LCD has that "ghosting" annoyance) somewhere for cheap... a small one, of course, no need for HD for DOS...