They do look cool and sound great, I had a 1976 4001 for a short time but the neck was completely shot and the truss rods juts didnt work. It was practically unplayable....But I remember the tone of of it. Gorgeous. Again not the most practical bass in the world, too much chrome, a superfluous pickup cover, too much 60 cycle hum, an nonadjustable bridge and wayyyy too expensive. I think if i was to but one again it'd have to be a 4004. Now if they ever decided to mass produce the 4005 again I would seriously consider a remortgage.