Both the Bow Classic (36″) and the Steel Bow (20″) are designed to be stand-alone products for total body fitness. The Bow Classic specializes with more range of motion for legs and powerful holds. The Steel Bow specializes in versatility and muscle targeting. I think about the Bow Classic as a barbell and the Steel Bow as a dumbbell. Both have perks but you cannot go wrong with either. If you plan to travel or take your Bullworker with you, the Steel Bow is much easier.