When comparing the Wahl Super Taper Cordless and the Wahl Senior, there are a few differences to consider. The Super Taper Cordless runs on a lithium-ion battery, offering 90 minutes of run time, whereas Wahl Senior Cordless has a 70-minute run time. Both clippers provide a powerful cutting experience. However, the Wahl Senior is more popular among professionals, as it has a stronger V9000 motor and is better suited for heavy-duty use compared to the Super Taper Cordless, which is typically designed for home users.