The ease of use (after training). It was easy enough that my son could do it himself if we didn't have techs at our facility during regular business hours. They are very responsive via email or phone when something goes wrong. We had some issues last summer around end of July/beginning August where all of our signs stopped working until they got us back up in early September. That's not good customer service but I know this may be outside their control due to seasonal downtime from hot weather causing equipment failure etc. Also, sometimes there can still be lag between changes made online being reflected by display after several days even though everything seems fine. Signage replacement system.