As I read through this thread I will address as many issues as I can.
Never trust general statements like AG is brighter/better than SM or visa versa. No two monitors are alike. Also the CRT is only one component of a monitor. A good CRT matched with a poor power supply, video amp or deflection circuit will look poor compared to a unit with an average CRT with better electronics. Even the highest quality monitors occasionally don't perform as promised.
The original poster asked for monitors without the horizontal damping wires, thus there are two options, slot mask or shadow mask CRT?s. The companies that make these have been listed, sorry I forgot EIZO in my original list. Lets respect what the original poster is asking for.
If you have an opinion on a technology it would be nice if you can back up your statements with facts otherwise it is just an opinion and every one has one.
Brightness ?Luminance? has little to do with the actual CRT. It has more to do with how the manufacturer set up the unit at the factory. Again all units are unique. AG has more phosphor area for the beam to hit, however this does not mean all AG units will be brighter than SM. ON the other hand this means that AG is more prone to screen burn. There is always a trade off.
When the manufactures of AG monitors start publishing Brightness, Convergence, Geometric distortion, linearity specs, we can then do a comparison. Until then there is no bases for saying one is better than the other. BTW with the exception of linearity I publish these specs for my monitors. So you can use them as a comparison. I know why they are reluctant to publish these specs, I have see their specs.
SM CRT?s have an advantage in Color purity. NOT color saturation. AG monitors tend to be more prone to magnetic fields, thus colors in the corners sometimes are a problem. Put up a red screen and rotate your monitor 90 degrees you will see what I mean.
Slot mask is NOT AG or SM. It was a design by Toshiba that NEC ?Cromaclear brand? tried to market. NEC and Toshiba have left that market LG is the only remaining manufacture using slot mask that I know of. Slot mask is kind of a combination of AG an SM. No it does not have the horizontal stabilizing wires.
King did a good job on dot pitch and slot mask, no more needs to be said.
Apologies to the original poster.