The Titian LX or Supreme is all the regulator most divers will ever need. We use Titians in our rental fleet, and they get more use that any individual diver could. With routine care and maintenance they will last forever as ours seem to. They deliver air extremely well, and parts wil never be an issue. Also, AquaLung has the best warranty/parts deal in the industry. Be sure you buy from an authorized dealer to ensure you get the warranty/parts deal. Dive one myself when I teach, find no difference in performance compared with my FDX10, Mk25, or Hog sets in recreational limits.