Guys, Thanks again for the information. I had tried to figure out their system based on logic, but I failed! You would think the M-Tonic saws should be labeled with an M to reflect they have the electronic system they are so proud of. The web site seems to list all the M-Tronic saws as "C-M", but the same saw without M-Tronic is not labeled a "C" ... go figure! (Only referring to the Professional Saw category).