BillyMaysFan59: Sort of. On Arch I have both KDE and XFCE set up. One of Debian's main goals is to be "stable", meaning that a lot of the software that goes with it (and is in the repository) will be older, or not the latest versions. That's because "shiny new stuff" can tend to be pretty buggy. Arch Linux, on the other hand, is all about bleeding edge software. Whenever you update it, you get the latest "shiny new stuff".
Debian uses KDE 4, but now there's a KDE 5 apparently, so that's what Arch uses. It crashed on me a couple times, so I might switch back to XFCE. (haven't experienced any problems with that yet)
From what i've seen of it KDE 5 looks really great but i can imagine that it's somewhat buggy. I really like XFCE :).