The WISE 2086 tension head now has the new series 14 replacing the series 12 machine. The price is also higher. I wanted to know if any member is currently using this latest model and know the actual difference between the two series. I'm using the series 12 currently, and just very curious about the series 14. Below are the listed improvements on paper from the website: The series 14, have several internal electronic improvements, including optical sensors, linear griper guide, machined motor mounts, improved gripper with lever switch, and redesigned circuit board.