I've still got mine too. I refused to sell it the day the stopped making them because they were such a classic, however it's really starting to hit it's limitations now.That's the one I've still got, ATC-201 with the chocolate brown/beige coloured panels.
Just about coped with an i3 2130 build, but was getting toasty by the time I stuck a 670 in there and upgraded the CPU.
Complete with Akasa soundproofing foam inlay and Asus/Abit board schematic stickers from days of Barton 2500XP builds.
I can only assume that they would be hideously expensive to make in this day in age, or more likely that they were so solidly built that nobody would ever need to uprade their cases.
Could be wrong but I think the Coolermaster company had a buy out around 2003 didn't they and the team that was responsible for the classic all alu cases when to Lian-Li didn't they?