I have been very pleased with my two laser printers from Brother. The first is a MFC which I know they do not need. My second is a b/w HL-5340 which does duplex. I am not sure how I lived without that. The b/w is my primary printer and I have the color MFC for color jobs.
Both have performed well. Staples is great if there is a problem with their customer service. My belt went out on the color and Brother wanted to charge me for the replacement belt even though the machine was still under warranty (it is considered a consumable). I called Staples because I have an extended warranty through them and they replaced the printer free of charge.