I had a long time with the "old" (original) Drum Unit Brother DCP7010 my anger. Now after I had made the decision to form a new but not original drum unit, I opted for the Profukt of Fa. Hainsberger. After the delivery expected was quick, I put on the new drum unit and prints again on my merry little betagteren laser printers.
Conclusion: Great value for money and good service, uneinegeschränkte buy recommendation.