I used Sabayon for about 2-3 years on my laptop with no complaints. I mean, it broke a few times, but that was my own fault, and I was always able to 'unbreak'

I used Sabayon for about 2-3 years on my laptop with no complaints. I mean, it broke a few times, but that was my own fault, and I was always able to 'unbreak' it using recovery images and usually due to proprietary modules (grrr ATI). I finally stopped due to my laptop itself breaking; crunchbang is my new distro of choice for my desktop. Biggest upsides: fast(er) turnaround time on updating packages compared to Gentoo (not just build time, entropy >> portage as a package management system). Current packages packages with wide selection due to Gentoo as upstream. The one caveat is that mixing gentoo/sabayon with any amount of complexity is pretty involved.