This works great, though it is a bit expensive.
The main issue when buying toner cartridge is whether the extra expense compensates for the potential extra problems from remanufactured cartridges.
A problem with the DCP-9045CDN is that it starts displaying annoying messages about replacing a cartridge not when the cartridge is running low, but based solely on page count. So if you use your color copier mostly for making black-and-white copies, the DCP-9045CDN will tell you to replace the color cartridges long before they run out of toner. If you blindly follow its advice, it will cost you a lot of money.
The key is the trick mentioned in another review here. With the printer turned on, open the front access door, revealing the area with the toner cartridges. Then press the Clear/Back button. A secret menu will pop up, allowing you to reset the page counts associated with different cartridges. For example, you can select the "C.TNR-H" option to tell it that it has a brand new Cyan toner cartridge with High Capacity. Then close up the door, and you're ready to go!
Of course, you have to monitor the quality of copies to decide when to actually replace a cartridge.