Listers: For university use and training, we are seeking advice on the most efficient and cost-effective Braille embosser. Which of the medium-size embossers have served you well? Our budget is under five thousand U.S. dollars. My concerns are: Availability and responsiveness of technical support staff; Reliability/durability of the embosser; Low noise level; Possibility of on-site maintenance in case of breakdown. Also, indicate a source for purchase in the United States. Thanks in advance for your assistance. Sincerely, Paul M. Ajuwon, Ph.D.