I have attempted 3 arch installs in virtualbox about 3 weeks ago cause I wanted to check it out. I was interested in pacman and the rolling release model they have. I tried an install of gnome, kde, and xfce. xfce was my first attempt and I didn't do so well, gnome was my 2nd and it was better, but still not fully functional (I'm not sure if I did something wrong, or if it was just the gnome base with nothing added that I was supposed to configure), I nailed the kde install, but as kde isnt' my favorite DE I ended up scrapping the install. I did learn quite a bit doing the install and trouble shooting when things went wrong. I was all set to go to give it a real shot on my spare partition but then i started reading about Debian and I couldn't really make up my mind, as both should have strong support and are highly regarded distributions. I guess I should just make up my mind already and get started, I think the easiest way would be just to pick the package manager I want to learn (apt vs. pacman) and go with that.
"If it's stupid and it works.... it's not stupid"