I have fairly long fingers and assumed 18mm would be the sweet spot but I find I really like the 19mm spacing on my Yamaha necks. It feels very comfortable, matched with a 1 3/4" nut; space for the plucking hand, easy maneuvering for the fretting hand, win-win.
However, I've mostly been playing 18mm live for the past few years (for reasons other than string spacing) and I also enjoy the 17.5mm on a Stingray 5. (The SR5 has a similar "modern shallow C" neck profile to the Yamahas which I'm sure helps.) Below that I usually start feeling cramped, especially with the bit of slapping I do.
I chose 18mm because it's sort of in the middle of my comfort range.
However, I've mostly been playing 18mm live for the past few years (for reasons other than string spacing) and I also enjoy the 17.5mm on a Stingray 5. (The SR5 has a similar "modern shallow C" neck profile to the Yamahas which I'm sure helps.) Below that I usually start feeling cramped, especially with the bit of slapping I do.
I chose 18mm because it's sort of in the middle of my comfort range.
