I think the Quadra/Centris 660av looks great in its pizza box. I recall almost trading a Power Macintosh 6100/60 for a Centris 660av in 1996 for the advanced features the 660av has. It's really an incredible Macintosh, even when stacked against the first generation Power Macintosh computers.

I got a 610 about 3 weeks ago. You have to love the auto-inject floppy opening on that case. It's a must for any collection.