Welcome rstich!
As far as I know, GN is not(yet) more performant than Particle Hair, but it does have a lot more control and (once) you get used to it is easier to work with.. And GN, in it’s first stage is made for set dressing, so it makes sense to try it out.
Yes definitely try them all! Maybe combine different techniques…Think of something new…Go wild, like a 15 year old girl at a SG concert 😉