Yes, I go for Karen's Replicator too. Fast, reliable, regular copies of files (no proprietary locking or compression - I remember MSDos backup util was cumulative, locked, and went onto floppies.. recovering a file sometimes meant ploughing through 30 or 40 floppy disks even though you knew which one it was on.. so much for the good old days...).

Karen has a facility for removing backed up files that have now been deleted from the source, but you can choose either way. She has many really useful progs (all freeware, but contributions welcome!) including directory listings printer, cookie manager, etc...

Searched for ages for a good backup util, and Replicator is my choice.