I've see a lot of ads where the seller states that the neck is "fast". In my short window of learning so far I've played only a few dozen basses. I have noticed on a few that the transition is smoother when shifting hand positions, and some seem stickier than others. Is this what they mean by that? The smoothest I've played was a Warwick Corvette (hmmm... a fast Corvette!) with flatwounds on it. So what else goes into and constitutes a fast neck??