However, with the recent changes (Unity, I'm a Mac clone), I will probably be moving to Xubuntu sooner or later.  I gave KDE one more try recently, but I find that I am too firmly entrenched in the GTK way of doing things.

I am a musician, and my long term goal is to learn my way around Pro Audio using Linux.  Most folks in that world default to Macs.  I want to avoid the expense and vender lock-in that comes with using a Mac.