liteon 411s here. love it! but if you are going to get it and burn -R the FSOF firmware is the most stable for -R. you can find it and instructions over at club.cdfreak.com in the liteon forum.

the newest official firmware which is FSOH gave me both audio and visual problems on -R when I was backing up the 1st season of southpark episodic DVDs using dvdshrink 3.1 (which I HIGHLY, HIGHLY reccomend see below.)
went back to FSOF and burns have played perfect again.

as far as dvdshrink, It's everything I wanted in a dvd backup solution. you can preview titles in full screen (so as to see which are wide screen format and which are full screen) and you can preview any audio stream associated with the title. makes doing movie only backups (using reauthor mode) almost completely coaster proof. it's a little - stress very little more work than DVD Xcopy, but I no longer have to test with a +RW because I know exactly what I'm going to get before I burn. with Xcopy sometimes I'd end up with the directors commentary or something crazy like that.