It's just personal preference. I like getting updates to applications and kernels with the six-month release cycle, but their new interface release cycle seems rushed. With Arch I have even faster access to app and kernel upgrades without the gratuitous (to me, at least) system changes.

You want to upgrade users to grub 2.0? OK, not a pressing need for me, but fine, whatever. But at least when you make that change include system support so I don't have to manually repair the grub menu's default selection every freaking time you update the kernel. </rant mode>