Debian! I love the apt-get function of debian... so much better than redhat packet manager...
Don't forget that there's apt-get for RH too (acts like wrapper for rpm command, works very like the Debian's one, although on my A1 it's smoother than apt-get on RH9 when it comes to broken installs/dependancies).
But there's another advantage of debian: packages are configured on the fly when installed. IMHO, rpm-based distros lack this feature.
Jack.