After awhile of being LCD only, and killing a few LCD's with the obnoxious graphics modes a old VLB VESA video card on a 486 can throw out, I went back to using classic 14-15" CRT monitors again.
For my 486 I picked up a CTX digital control monitor from 1994 for free off Craigslist. Some guy had been using it to test modern video cards with, it was a perfect match for that system as it's crisp and clear. I have no idea what model it is though. But it's finally nice to be able to use some of the more oddball modes in GFXII without issues.
I also just recently found a neighbor was throwing out a perfectly good old IBM SVGA monitor from the late 90's/early 2000's, little 15" thing, probably made by Tatung. I'm using that with the 286 even though it's not a match.
I wish I could find a Tandy CM2, CM3, CM4, or CM5 for my Tandy 1000 though. Seems the well has dried up on 9-pin monitors, and when you do find one, they cost a premium nowadays.