The question hides a theory of value. One user may optimise speed; another may optimise autonomy, reversibility, privacy, aesthetic pleasure, or resistance to vendor control. A tool is therefore not simply an instrument but a small constitution governing memory, attention, and ownership. The most sophisticated choice may be plural rather than singular: different tools for capture, synthesis, communication, and archival storage. The cost is fragmentation. The gain is refusing to let one product define the boundaries of personal thought.