Thanks mechy, the 1942 was released in 1993 yet the 1960 which was released in 1992 seems to make use of the 4000 models more being two years older. I'm confused lol
I would'nt put much into when the monitors were made, this has no correlation really. Commodore even used 1084s on their early ibm clones.
it just comes down to what you want to do. Multisyncs can usually do all the possible amiga modes(15khz-31khz+), while 1084s etc will tolerate 15khz modes only. Without a flicker fixer/scan doubler you might likely go crazy with the flicker in some interlaced modes

As someone said above, never is not always better. Go by the specs of the monitor to choose whats best for you.
If you want accuracy,a crt is the best thing,since amigas were made for them. some lcd monitors can do 15khz(like the dell 24" st2410l i use) and although it looks good in some ntsc modes, it doesnt handle others.