While Sabayon is quite nice, it does crash at times on updates. Otherwise, it is just terrific. It has all the Gentoo official repositories and it's own too.
However, if there was something I'd suggest to others for general (and heavy), it would be Pinguy OS (Pinguy OS
) It has almost all the pre-configurations in Sabayon and is lighter to use(though not by much).
It's a variant of Ubuntu, so has all the packaging advantages, something which Sabayon doesn't. Mixing entropy and portage in Sabayon generally causes the system to crash after some time; making the choices on packages limited.
You can try PinGuy's 11.04 version till the 12.04 version comes out, I'm sure you won't be disappointed. However, seeing the increment and change of kernels, It's better to wait 2-3 weeks for it rather than upgrading it later on.