I see this is a few weeks old, but it was hit #1 on google when i was looking for dvd burn quality.
I have the 111D and honestly i am fairly un-impressed. I think the samsung and the Benq i have both do a better job then my 111D overall. I work pretty much Exclusivly with Taiyo Yuden Dvd+ and - media for single layer and i work with Crap ritek dls for some data backup and some better verbaitum dls for video. Now im not talking technical aspect, as in i didnt run and compare the read/write tests etc. But if i take the discs and put them into a 2 year old dvd player the ones from both the benq and the samsung both play flawless, wheras the one from my 111D Does play, but it will jump on the occasion. Also it seems to take much longer to read manu data for some reason. Can't figure that one out yet but it just spins and re-reads the disc a few times to get the menu whereas the other burns play fine.. Have done this a few times with matching results. I did attempt to do a video burn on the ritek, but it failed on the 111D and worked on the Samsung, but it didnt play well.. (as expected)
just throwin out my experience with it..
On the + side though i unlocked a pioneer 106 and it can read and analyze a full dvd in minutes and it has hit rip speeds of 6+megs a second. before it was unlocked it was pretty fast already.. i will keep that thing until it dies just for its rip speeds.