Just thought I'd chip in on the NEC 1990FXp:
Plain ST modes are displayed ok. May need some adjustments to the size/position/scale settings for Falcon resolutions though.(Auto adjustment doesnt seem to help here). Also does not like any interlace modes whatsoever, so maybe not the best option for some Falcon demos.(Definitely not the best thing for Amiga!
) It doesnt do as many less common modes as I'd like, but thats fair enough I suppose.
I've noticed a few modern TFT monitors have some sort of de-interlacing circuit and can handle at least some interlaced screens. The monitor/TV's are a different matter. They seem to have this as standard along with the option of combined sync for SCART.
Ive got some pretty exotic CRT monitors here I could try to test (although a few are pretty burned out after I had forced them to display 1024x608i on a C=128D @15khz!!), but not sure if you really wanted to know about modern TFT monitors instead.