A couple of lines supporting your choice would be great. (I'm trying to choose which distro to learn, but I would also be interested to know who prefers what)
I guess it all depends which flavour of Linux you've grown up with. If you've grown up with Debian and it seems it works in the Kuro environment, then fine. I've used Redhat and Mandrake (before the nenaming) on x86 family, but there was no direct community-supported port to the PPC / Kuro.
Gentoo is nice in the way that you can manage the dependencies and even nicer in the way that the kuro community embraced it. The debian port wasn't there at my decision point, so I had a simple choice. So I vote Gentoo - it may not be better, but it works for me.