I have been able to get these R03s to burn well on my 3500 but no where else. I would only buy these again if they were $25 delivered (per 100). Way too much grief. Even with the rebate I would buy Prodiscs from Rima for almost the same price. Almost any of the various media codes are better than R03.
By the way, these +RWs are very good in any burner I have used, even my 812S.