Hi gsgbass, I do have experience with an American standard Jazz, the neck on the Geddy usa has it's own feel it is nothing like the AS, in fact it is unlike any jazz i have played, i had a bass player pal who plays jazz and P bass, he just loved the feel of the Geddy neck straight away, the neck is thicker than most jazz necks but still very comfy to play the varnish is removed from the playing area so very fast, you really have to try one to see if the feel suits you, it is a fantastic bass, can't say enough good things about it , it has Great tone, build quality ,playability, looks . it has it all.