I’m looking to replace blood bank refrigerators, freezers and shock freezers. I’ve reviewed manufacturers and products via the internet, as well as, read past blogs. It appears that the leading manufacturers are Helmer, Follett and Thermo Scientific. Any information that you can provide on quality, reliability, service costs, total cost of ownership, temperature distribution, temperature recording and how long products will maintain the required temperature during a power outage would be helpful. I may take this opportunity to move away from chart recorder to an electronic monitoring system. Does anyone have any experience with them? Thank you in advance for any information you can provide.