Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Worst multifunction unit I've ever owned.

I've owned this all-in-one for 6 months and have returned two for technical problems. And Brother had a very hard time refunding the correct amount. Now, it's broken again and Brother can't fix it, and won't replace it. Even though it's under warranty. Control buttons are NOT intuitive and manuals are poorly written. Ink is MUCH more expensive than I thought - you only get about 1/2 as many pages as the marketing says you get from each cartridge. When any one of the inks gets low, it won't print at all. Non-OEM ink cartridges don't work. This printer in total has been down about one day a week throughout this 6 months. I'm throwing this one in the trash and getting a Canon MP530. DO NOT buy this machine.