I have done full backups from source DVD9 to +R DL DVDs using
1Click and
AnyDVD, using one drive as reader and the other as writer. In my experience I have not had a bad copy (coaster) in about a dozen attempts. Haven't done more because of the cost of the media and because a 1Click movie only to a DVD5 has excellent video quality. If by directly you mean "on the fly" 1Click will not copy in that fashion. The files will be read, written to a temporary files on the HD, and then written to the destination drive. That said, all the user has to do us select DL destination, click the start button and come back when it's finished. Not too involved.