For what is worth, when I worked IT for a TV station, we used laser printers to print scripts for news broadcasts. They were mission critical and time sensitive, and it was not unusual for us to print well over 1,000 pages per day, every day. High quality laser printers are tremendously reliable when properly maintained and when used with the correct paper (which is a often neglected part of the equation).

Having said that, so is dot matrix ... I'm in the "why fix something that isn't broken?" camp.