I am looking for a personal stringing machine. I will only be stringing my racquets, Prince O3 Speedport Black. I talked to New Tech, and they suggested that I buy the Axis Pro due to the disk brake system. He said the only differences between the Revo and Axis Pro are the stand and the disk brake system. I had made up my mind that the Revo was the right machine for me, but now I'm confused. Is the upgrade worth $200? If I decide in a few years to buy a high end machine, will the Axis Pro hold its resell value as well as the Revo? I realize that the Revo is currently not available, but I don't mind waiting. Any help would be greatly appreciated.