I am one of those few people running classic everyday. I use it for Quark Xpress 4.11. Although at the company I work for we also have Xpress 6.1 installed, I actually prefer 4.11 in classic. There aren't any features in 6.1 that I need that aren't in 4.11, and the 4.11 files are more compatible with both Indesign(CS) and Quark Xpress 5.x/6.x. which is important for us.

At home however I have completely switched to OS-X and have no real need for classic.
Blasting away at 2x2.5 Ghzhttp://www.visitagra.com