Both are less "friendly" than Ubuntu though so be prepared. CentOS is what the real Linux users use around work, though I long ago gave up on RedHat in favor of Debian/Ubuntu in my own installs.
B
You're right, I know. I played with Gentoo a few years ago and it was the most difficult flavor I've tried to use. But it's downloading now and I'll give it another whirl. I've not heard of CentOS before so I'll look that one up as well. Red Hat was my first Linux experience a really long time ago; I hardly remember it!