Summary: Duplex printing is much slower than I expected. I knew it wouldn't be as fast as single sided but it is much slower. Also thought it shipped with all four high yield toners but that does not seem to be the case as the cyan ran out right after the black and I didn't very little color printing.
Summary: I have been using this machine for about 4 months and I have to say, this is one expensive machine to maintain. First, the toner cartridges are supposed to have have a life span of 2,000 copies. No where close.
Summary: I purchased this to replace a Samsung CLP-510 that finally gave up the ghost. It has been up and running for a couple weeks now. I have more cons that pros... 1. The unit seems to be packaged well, and it's certainly heavy, but there was a crease in the plastic front of the paper tray.