I just picked up a 27" professional VGA monitor free! Thanks to Pixelhugger for the heads up, as it was headed for the dumpster before I got there!
(BTW, he's a really nice guy, and has a kickass control panel with a sweet rounded bevel around the trackball. Really professional looking.)
The model is NEC 4PG. Let me say that the picture quality is great. Not as sharp as a PC monitor, it is just fuzzy enough to look like a really good arcade monitor with no scanlines, but plenty sharp enough to easily read text. I have tested it fully with MAME32, and it seems to do any of the resolutions below 800x600, even oddball resolutions like 512x384, 400x300 etc that my PC monitor won't do. Vector games look great at 800x600. It will also do interlaced NTSC resolutions. The picture is fully adjustable for size, position, pincusion, brightness, contrast, tint etc via a really big remote control. Seriously, I feel like a kid holding this thing!
The monitor, which has a built-in cooling fan and speakers, automatically switches on when a video signal is detected, so the problem of rigging a remote power switch is avoided. It also accepts multiple video sources (each with a passthru) in case I want to add consoles etc to my cab in the future.
All in all, it's perfect for my needs. I'm in heaven!
The only problem is that the built in enclosure is about 1/16" too wide for my cab. 1/16"!! I should be able to fit it easily by removing the case, but how easy that is remains to be seen...