Well I bought Pioneer115D, put FW1.8 on and it burnt DL Ritek S04 quite well. 2 out of 2 were read by the 360. This was not the case with Pioneer 111D and BenQ1650.

Surprisingly it errored out with SL Sony (Sony16D1) 3 in a row but the same image worked fine with prodiscF02, RitekF1, verb, Yuden etc