Review on Premium Quality LxTek Compatible Toner Cartridge Replacement for Brother TN-450 TN450 TN420 - Reliable Printing with MFC-7360N, DCP-7065DN, IntelliFax 2840, 2940, and more - 4 Pack, Black by Shug Quinn

I was really surprised at the print quality with these cartridges. I only have the first one so I can't say how long it will last. My only comment is that I followed the instructions to clean the wire from the front, but it didn't help. I have a line about 1/2 inch wide that is dark at the top of each side. Since I'm retired and most of what I do doesn't need to be perfected, that's not a problem. However, this is annoying for documents that need to be printed out and mailed back to the company.