In my own personal experience and my humble opinion, I have always noticed a difference between rosewood and maple necks. My father's '77 Fender Precision has a highly glossed one piece maple neck/fret board. Mine had a rosewood fret board. I think that one has to take into consideration the finish on the neck and fret board and more importantly the weight of the neck. The 77's neck is very heavy and if you use anything other than a leather strap the bass will slip on your shoulder until the head is pointing straight down. Mine was much lighter because rosewood is much lighter than maple. My bass, with the same strings, was much snappier than my Dad's. He was always used to maple neck basses and it was the first thing he pointed out when I got mine. Same amp, EQ, and tone control settings as well. My uncle also tells me that his rosewood strat has more sustain than his maple necked one. Don't know about that one.