Well, I don't know how this distro will compare to DSL but it seems to be quite well suited to making use of multi-session discs try the multi-session version of Puppy Linux multisession is a mirco distro like DSL so you should be able to save a good number of personal files and settings on the same CD, but this distro is not as robust as Knoppix, but is still very well suited for multisession.