I've heard that "Benutzer" has a connotation of being more general and "Nutzer" has a connotation of being more technical, but that's probably nothing formal.
R at the end of the word should sound similar to how British English sounds compared to American English. Like "playah" instead of "player"
I don't really understand the translation behind the word 'Nutzer" i get it, it means user.
But here in the states, If i say he/she is a user. It usually they use/abuse drugs and such.
So what would "Nutzer" mean in German, like if i was a "Nutzer" what does it mean.
And here in the States i am a "user" of software programs and to know how to use them i have a "user's guide". This is just one of many possible examples.