That last one- the Titanium BB, is tempting, but the design is screwy. Normally the DS cup has a flange so you can positively tighten against the frame, and the NDS has no flange, so you can tighten against the bearing. But these Chinese Ti BB's have flanges on both sides, so both sides bottom out against the frame. Now there is nothing positively clamping down on the bearings aside from friction. A dumb design.