Quick quiz: What new-manufacture general aviation airplane has been in production for almost 55 years? It's the Beech — now Raytheon — Bonanza, the latest versions of which are clearly descended from that original V-tail design. But today's offerings reflect what evolutionary — not revolutionary — change can bring to improve an award-winning design. New, finely-tuned engines, state-of-the-art avionics and interior appointments as fine as any piston-powered airplane round out the package. And, as Dave Higdon writes in this AVweb Pilot Report, the handling qualities, utility and efficiency that made the Bonanza and its descendants one of the most desirable owner-flown airplanes continue to this day.