What about some of the horns that come with both heavy and light caps, and two tuning slides? Conn Vintage One comes with all these extras, and so did the now discontinued Kanstul French Besson Classics. Cannonballs come with an extra set of heavy caps, and the V Raptor and VRII come with the cylinder reinforcement cap and 2 tuning slides. These horns are obviously designed to be pimped a little - are some of them really so different than some of the others that don't come with these options? Just curious! BTW, the Bach heavy caps that I have seen hardly qualify as heavy - they don't have much mass to them, and it's hard to feel the weight difference between them and the originals.