RA2 was successfully copied by Ricohs (my 7163A), Sonys (140), some Lacies & a few other ‘non-SD2’ brands. Let me tell you, SD2 was tightened up after that!. Those posts on the Sony took my interest because a casual acquaintance I saw again last night swears by them. The Sony 140 & 160 models he & his mate have, seemed to have eaten everything they and the blokes at work own (B&W, MP & others). I’m buggered, but then the LG GCE-1610A and the ASUS 16x CRW-1610A only surfaced recently as ‘proper’ SD2 burners. I’ll be testing both Sonys over the W/E & will let you know.