So I was hoping to use some flats and somebody gave me a used set. I was planning on my next purchase being a p bass but today I strung up my fernandes jazz with flats and WOW, that was just the tone I was looking for. Sort of like vintage but not to puchy or mellow, perfect for the jazz stuff I've been doing. It also feels great, smooth. Maybe this is not as much as a revelation for you as it is for me but I just wanted to share my experience. On top of the tone, I was having some buzzing issues so the fernandes was about to be sent away to a shop but the flats also fixed that problem, I was able to ge the action right where I want it without any buzzing. Yay! Haha Ok, anyways, just ignore me, I am just an upright player who is finidng his way around the electric more and more.