Summary: We use these Oki's all the time in my workplace. They are great when you don't need to print color. The only negative is that they tend to curl envelopes and labels when you use them - that is not really an issue for us but something you should definitely be aware of. The toner and drums last quite a while. You do have to clean the sensor with an alcohol wipe from time to time but that only takes a second. We have some that have been in use for 3+ years now.
Summary: Use these lazer jets at 5 offices. OKI is a good company to use. I bought two extras and have put them into use...It give me some to have incase of a failure. I'm an OKI fan (over 20 years) . Delivered in a timley manner and work great.