Sweetwater has a nice feature on their website that allows you to compare the specs of multiple products to each other. I did a compare between two fretless basses, the Squire Modified Jazz base and the Fender Standard Jazz bass. The only tangable differences I see are: Agathis vs Alder Urethane vs Polyester gloss C vs modern C The strings guage $299 vs $625 I gather that the $325 differences are intangible and subjective. Please correct me if I'm off base. PS what are the differences between the C and modern C?