I just recently started employment at an institution that uses ECHO. I have to comment that I am not very familiar with the ECHO. We have had some issues with the ECHO, but service is working through them with us. I previously worked at an institution that had the ProVue. I have to say that I like the design of the ECHO better on the note that you have to wait for the ProVue to stop or reach a certain point before it will let you add and reagents, cards, or samples. With the ECHO, you can add them at any time. I believe that the Tango allows you to do the same. I only know a little about the Tango, so unfortunately I can not give you my opinion. Although I believe that the methodology for the ECHO and the Tango are similar.
