a) I always original for an error case Tonerkatuschen on stock
b) I can compare directly how good or bad the "compatible" toner
What can I say:
Even with a good eye and under the microscope see neither I, nor my family ever a difference from the starter genuine toner.
Installation not differ in the slightest way from the "original", but is also recognized precisely as a "stock".
Thus, I can only recommend any price conscious buyer the Brother dye laser, also zuzulegen this replacement toner. Either Hainsberger here has a super mix or found but it's just the same toner, the Brother himself also used.
The 5Sterne there just for the dealer Patronenbob because the merchandise was super packed and therefore also a new "dwelling" for my "Orignal-toner" is present.
Therefore, absolute buy recommendation from me.