Bests & Worsts Reviews from Amazon

My history with the HL-2270DW and the TN-450 cartridges: Starter Cartridge - 751 pages, changed 12/27/2011 2nd Cartridge - 1,999 pages (total printer count 2,750) Changed 03/29/2012 3rd Cartridge - 2,559 pages (total printer count 5,309) Changed 07/24/2012 4th Cartridge - 2,627 pages (total printer count 7,936) Changed 11/19/2012 5th Cartridge - did not record 6th Cartridge - Approx. 2,300 pages (total printer count 12,585) Changed 08/14/2013 (DRUM IS NOW GIVING WARNING OF 0% LIFE LEFT) DRUM UNIT REPLACED AT 14,908 PAGES 12/21/2013 7th Cartridge - 2,537 Pages (total printer count 15,122) Changed 01/03/2014 I run them until I notice a problem with the output itself, the low toner message comes on long before they actually run out. You can press the GO button 7 times in quick succession to do this. As of now I've stopped counting page output, I think the results are reliable enough to form an opinion. My printer is still rocking on just like it did on day one!