I use the fjo and love it. I have a digital display mounted on my dash so I can always keep an eye on things. You can plug a palm into it and log your runs. With their new software you can either view the graph on the palm or download it to a computer.
Does anyone make an analog display for the FJO? I find the digital displays distracting. Analog displays not only show you the A/R ratio, but also the rate of change of the ratio too. For these same reasons, most of the car makers discontinued the use of digital speedo and tach.
They only make a 3 digit digital display that is packaged in a "radar detector" style box or the other option is a 2 1/16" round gauge that has a radial bar graph around the outside and a 3 digit digital readout in the center.