Well, the keyword there is "preference" As I said in the beginning, both belts get the job done, in terms of optimizing spinal neutrality and performance. The difference that made me choose the lever is the ease of reaching the "sweet spot" of tightness, as I am not comfortable with middle grounds or bad measurements. I also don’t mind carrying a screwdriver around, it makes me seem more of a gym craftsman than I really am. The choice is up to you, after all.