I like the apt-get option but the debian testing distribution is just catching up too slow.
If Klaus is able to put together a workable up to date software selection wouldn't it be possible to have a mirror with the deb files so we can just apt-get upgrade to the latest knoppix selection?

I do understand why Debian moves more slowly with all the surplus demands of compatibility and all that but the main attraction of knoppix is its installer AND the fact of having great software to play/work with on an x86 box.

The reinstall option with seperate home partition is workable when you don't need software that's not on the cd. In the latter case you have the choice between following the slow Debian release cycle or reinstalling a knoppix and reinstalling the additional software each time (if dependencies allow, and that you only find out after the install so you can end up reinstalling an older knoppix again sometimes)