Nowadays you can also send your guitar out to be "plek'd" which means they scan the neck and dress the frets and cut the nut by automation, so that it's all accurate and low action and perfect like a human can't do...
https://www.sweetwater.com/shop/guitars/plek/index.php
.... but I knew a dude in the area with 50 guitars, who played with a bunch of people in the area; and I asked whether he had any of them plek'd, and he said yeah but he didn't see a huge difference.