I know a few CNAs and a CNE, we use Novell a good bit (too much IMHO) where I work.
NDS is light years ahead of AD, file and print sharing (their main gig) is fast as hell and is very reliable, right inheritance between directories and NDS objects actually makes sense. Technically it beats the snot out of NT as a file server, the licensing is a bastard though. Novell tries to tie everything to NDS, which is a good and a bad thing. Good because NDS is reliable and gives you automatic redundancy and the like, but bad because things like their DHCP server can only update NetWare DNS server are really annoying.