Hey SmileyIcon, welcome to the forums
XFCE has it's own minor differences in it's way of doing things, like every DE does

To be honest, we'd need to know what you want, what 'flaws' you're looking out for - if it's a good interface, I suppose that's subjective, but yeah, XFCE is pretty decent IMHO. I use Ubuntu Studio 12.04.1 (which uses XFCE) with KXStudio, and I love it.
Incidentally...formats? O_o Is there something preventing you from making separate partitions for data, your current OS, and the new OS you're trying? 25 GB per OS has tended to be enough for me so far...trying new OSes is pretty painless that way. Moreover, why not try it on a LiveDVD/LiveUSB Flash Drive before installing?
Looking for the ideal distro. NixOS?
Newbie composer, somewhat-experienced classical guitarist.
Largely known as HisaoNakai/contrapunctus on IRC and other places.