[QUOTE=Vampirtc;2030915]Would it make a big difference if I upgraded from 111D to 115?[/QUOTE]
For just DL burning ? No itis not worth it .
But for high speed burning ad excellent quality then yes
My 111L is an excellent burner but it likes lower speed burning (8X) even with 16X media that burn upto 20X with 20A4P
111 is excellent with 2.4X DL Verbatim media @4X even better than LiteOn 20A4P or the much hyped Samsung 203B
It is also better than 2.4X burning which produces higher errors with the same 111L burner