edcat7 wrote:Thanks for the reply. But why is 52 mm and 65cm scale length the standard? Why do professional players use this size?
In the days of the Model-T ford, Henry Ford is reputed to have said "you can have any color so long as it is black". As guitars became mass produced items someone somewhere standardised on the 52mm/650mm set up. It became a de facto standard for mass production. So the chances are that many professionals today learned on it.
However, not so long ago many professionals would have been using something more like a 52mm to 54mm with a 660mm scale. The 660mm is less popular now but check out older top of the range Spanish guitars and that is what you will see.
If you are happier with a narrower neck, then by all means go for it. As has also been pointed out the string spacing is at least as important as the width of the nut so that two different guitars with the same nut width may feel quite different. You could try the 50mm nut on your other guitar to see if that string spacing makes it feel more comfortable. If yes, you could get a new nut made.
I doubt very much is neck or nut width has any hearable effect on the tone. 99.9% * of the tone is from the player, not the guitar. A top class player could make a tin box strung with rubber bands sound good.**
* freshly invented statistic.
** minor exaggeration for dramatic effect.