We keep the ones that move us, and stir within us a sense of something quite remarkable and individually unique. They beg us to push the limits, but complement us each step of the way...
These are often no-name or stencil instruments, perhaps even a hodgepodge of random, recycled parts thrown together with "aftermarket precision"; regardless, they move our souls.
The rest are currency that we improve with our care, precision, experimentation, and respect.