A Kanotix install will get you closer to a pure debian install. There are some pros and cons you may want to consider...nothing too major. For instance I believe Kanotix only comes with a 2.4 kernel at the moment...so if you want 2.6 and don't feel like adding it (which Kano has a script to make easy) keep that in mind. Kanotix is also not a good idea if you have a system that's highly outdated. Both will give you good debian-based systems...my first choice would probably be Kanotix though.