Yes, I can feel the difference between knobs that has 1 bearing 1 bushing vs knobs that has 2 bearings, you can compare your Bantam and Metanium handles side by side to see if it matters much to you. Bantam/Curado 71 handle knobs come with 1 bearing and 1 bushing compared to the Metanium 2 bearings per knob. Both 90MM handles mentioned of course are a lot better than those 84MM handle but then again, it's all up to you which one you want to buy.