Dell UltraSharp MultiScan 20" rings a bell, it's a true 20" Image at 1600x1200. literally the largest 4:3 diagonal I've ever had the pleasure of using, matching even the ViewSonic P225fsitting next to it in size, if not in pixels.

IMO, you need to look for a 21" MultiSync CRT w/BNC in your outings, even if it's not 1600 capable. It's sounding to me like you're becoming almost as crazy a VidCard guy as I. Every Mac collector needs one and you need to grab one quickly, before they all disappear into the evil pit that is gaming consoles tucked away in "home theater" cloaked man-caves.