Balance over weight. I played a borrowed bass that almost crippled me because of the neck dive. I had a 5 strong Pulcinella that weighed in at 8 pounds and Spector 5 string that was a hair shy of 8 pounds but didn't balance that great until I put un a strap button extender. I had a Music Man with a Staus graphite neck that weighed about 9 pounds but was like sonic ex-lax. The low end could clear a bowl obstruction in no time flat.