The original Studio Display is, indeed, awesome. Sadly, mine is a little busted at the moment. :-(

Yup, that is the entire line of 15" Studio DIsplays. At left is the ADC model, in the middle-back is the Blue & White VGA model, on the right is the graphite DVI model; and in front is the original dark-blue/gray old-Apple DB15 model. Looks right at home next to a beige G3 tower. You can also see the massive brightness difference between the models. The B&W one really is that dim. My original one will power up (LED comes on, and I can hear slight e-buzz,) but the backlight doesn't come on, and the screen doesn't seem to get any signal.
I have one more B&W one, but it is flaky, losing video after a few minutes. Finally, for the four 'original' style ones, I only have two power bricks. (I tried hacking a PowerBook 5300 power brick, since it supplies the same voltage and amperage, but I was unsuccessful.)
Edit: I also like my ViewSonic 21" CRT with BNC inputs. I have a BNC-to-Apple-DB15 cable, and the picture is just rock solid, even at 1600x1200 or higher. The monitor was an ultra-high-end one in its day, doing 1600x1200 at 85 Hz, and can be pushed out-of-spec all the way up to 2048x1536 at 60 Hz. I had my beige G3 running it at that with Mac OS 8.0 and AppleShare IP 6.0 Server. Lets me see *ALL* of the AppleShare windows simultaneously. One funny thing is that it will let you force it to 'unsupported' resolutions over BNC, but not over VGA.