Original Pro, not Super Pro. Difference is Guide number of 160 vs 200. About the most powerful unit on the market; back in 1989, when I got this as a college graduation present. I enjoyed the versatility of various Flash Head designs and found the Zoom Head and Diffused Head served me well just as they were intended. I still have and use this as a backup on an Umbrella Stand. I do have the first generation EOS Module, so can use it with my latest gear if I ever felt the need. Nice to maintain viable older options even as more modern equipment is acquired.