I am not as pessimistic on this topic as others.
I use an LCD as my primary display in my old-computer setup. Some LCDs can handle the DOS stuff quite well, including 70Hz refresh modes and DOS VGA/VESA resolutions. Most can not. That doesn't mean that good ones are rare, but they are not well documented.
I have had good luck with Dell monitors. If you find an LCD that can refresh at 75Hz, you can pair it with a scaler such as the GBS-C or OSSC. The scaler will take the output from your video card and it will spit out the same image in a resolution that your LCD can handle. If you find just the right LCD, you can do without the scaler altogether.
I get very good results on my 19 inch 1280x1024 monitor. I have a few good CRTs, but I cannot put any of those on the desk that fits my living space unless I want the viewing screen to be mere inches from my face. It is crowded and leaves no room for my KB, trackball, and joystick. The LCD makes everything fit well like magic. And I get a very large viewing screen.