Happy birthday! And... A question for people using arch: If I install arch correctly and study the basics, will I need to spend time maintaining it? I like the idea of having a distro I can customize and play with to really learn how linux works, but when I want to stop messing about and get work done, it would be nice for it to be as stable as OSX. Unrealistic?
I update once a week, keep configs up to date with "yaourt -C" (yaourt is available in the AUR), and read archlinux.com prior to updates to avoid issues.
One caveat is that you need your /boot mounted if you keep it separate, or else anything that depends on linux-headers (like filesystem drivers :/) will break if there's a kernel update.
If you want stability along with the tweakability, go with Debian.