If you must know, I think 3.9 is a bunch of icons and patches for 3.1 on a CD. I bought the CD once and I'm not gonna touch it again. 3.1 is as modern as it gets for me. However I never was a Workbench type of guy anyway and quite frankly not much for harddrives either. Always thought it was boring old men who used those back in the day.
Need I say I love floppys???