I have both 10 and SLES 9.
I have the licensed Novell Package (can get support when needed), and I use SLES 9 on a couple of small client systems.
I suppose there isn't that much difference at the core level, but since I'm open to suggestion and experience, Why 10...?
BTW, I couldn't get the autoinstall to work... "Can't run a binary file"...