I like distros based on sid but Gnome is not for me. Luckily Gno-Menu makes it less annoying. Unfortunately Rebellin decided the icons need to be big enough for blind people to see them. Being based on Debian means you get all the good stuff that come with that and being based on the sid repo means up-to-date packages. While I like Debian the older packages tend to make me go elsewhere. I have used sid based distros in the past and found that if you read up before doing updates you can also avoid a lot of breakage (I was fond of smxi as it tends to keep you on a safe path). Surprisingly I ran into no breakages while testing Rebellin even after a dist-upgrade.