In reply to the previous poster, VGA is analog, DVI is digital; DVI, assuming the cabling is good, removes the potential for blurriness in the image that can happen when converting an analog image signal to the digital pixels of an LCD display, as well as a host of similar analog to digital conversions. Think of it this way; the computer creates a digital signal, but until DVI had to convert it to be displayed on an analog monitor; now that monitors can be digital as well, might as well send that signal directly to them.
As for the original question, it's a toss up the way I look at it. The contrast pretty much comes in when I look at the back of my G4 w/Apple LCD at work, and G5 with VGA CRT at home.
At work, one cable goes under my desk. Unplugging my computer to drag it out involves unplugging one connection. And, I only need a very short cable on my keyboard. Plus, I can put my computer to sleep or turn it on by just tapping the monitor power button--very convienent. On the other hand, I can't put my moitor to sleep by itself (need to wait for the computer to turn it off) and I need to buy an Apple monitor.
At home, I have a HUGE mess of cables snaking from my monitor down to the computer and power strip. If I had an ADC monitor, I would have two less cables going under my desk, about 5 feet less coiled cable, one more free USB port on my G5 (in fact, I could have two free ports and three less cables if I plugged my USB hub directly into the monitor), another free plug on my power strip, I'd be able to sleep my computer without reaching down to the tower's button, and it'd be a whole lot easier to move or disconnect stuff.
However, the advantages of my current system are my monitor is compatible with anything that has a VGA port, and I can power it down manually if I'm doing a long download but I'll be out of the room.
I love the cleanliness of ADC, but I can also see the advantages of Apple selling monitors without it--assuming Apple's next gen LCDs are a decent buy, I'll be torn between them and a generic DVI monitor. It'd also free us all up to use stock ATI/NVIDIA graphics cards, without having to worry about adapters or special connectors.
If only Apple had some way of pushing ADC as a standard...