I tried SuSE personal edition (can't remember the version. It was about 6 months ago) on my XP Athlon 2400+, 256mb ram, and it was pretty slow. Mandrake was better on the same machine.
SuSE seems like, all bloated up ...
And it didn't have gcc either, so I couldn't compile isdn4k-utils to get on the net (and couldn't download the binaries either)
So I went back to slack!