I used a Nec Multisysnc 3D in my early Amiga-Days. Now after several years I got that Monitor back from my sister (exchanged with another old VGA monitor, she used it for an old PC) and connected it to the A1200 of my son. It still works perfect and the picture quality is so much better than the old TV he had before (via antenna input)
The Nec3D is really a good coice!
The best would of course be a scandoubler with bouldin flickerfixer (to make the interlace modi useable). I have an external one for my C=A4000T. Really good device it was not cheep

selco,
http://selco.da.ru