Yes, BUT they also take some practice if you have used an older style gun. Because they put on more paint in one pass you have to be more carefull about runs,drips and orange peel from heavy paint. Once your used to them they are great.
I have a descent old school gun I got from a mechanics
For the grater I suggest the original sureform tools. Get a flat and half round profile and maybe a rat tail one if you have any holes to work around. Inline sanders vary in quality a LOT, but for most use the lower end ones work OK. Buy GOOD paper though. The cheap stuff is just that.
It's kind of fun having old autos that I
Yeah there is no substitute for actual hands on when it comes to body work. I started learning as a kid of about 7 from some old school body knockers.