I thought that the Aries series can use a longer arm..sorry. My Superscoutmaster has the rim drive, heavy platter, and feet. If you have a dual motor, do consider the rim drive..it makes quite a difference...the heavy platter is also worth it. The feet, although it's use is a subtle upgrade, it makes leveling the table much easier. When the cones are adjusted, an instability is introduced..not so with the mini=feet.