I think optical media will always have a place. Reason is that it is very good for long term storage. As long as the disk is just kept in a safe place, it will be good for years to come. That is the downfall of flash devices, they can die at anytime even if you do not use them. Sure it is not super common but if I have important pictures to save of my kids, I go optical. Besides, in a couple years, blu-ray will come down and be a very affordable 50+ GIG storage. There is even work being done on 100+ gig disks. So I doubt optical will die anytime soon.
As for lightscribe, you do NOT need a special disk to use the burner, only the light scribe part of it. I have a dvd burner that is 6 years old and it has worked on ANY disk I tried.
Just do the newegg thing and get a good lite-on drive. LG is ok but I have seen more failures with those than lite-on as a whole. If you see H.L datastore drives, RUN!!!! They STINK!