I'd tried Arch long ago, and was really disappointed to see the install instructions tell me to check the distro's blog for security updates.

Seemed really amateurish. Hopefully that's changed.

Also, it was really immature compared to Gentoo back then. Now it's had some time to mature, so I might give it another go sometime. But I'd really have to feel I'm getting a huge win over Gentoo to bother.