I would suggest finding some shop that will let you drag your TT in and test some monitors. My assumption is any good monitor that allows stretching of the screen and picture alignment and a decent freq range, should work. Some generic cheapo probably won't cut it, so you are looking at a more expensive monitor. I've also wondered if someone already has such a working setup, since I have a TT as well.
I have a gfx card, which is fully programmable that puts out standard VGA, so that solves my problem so long as I don't want to use any of the old stock modes. But sometimes the old modes are required unfortunately.