im a big fan of low reps, 5-6 or so
however, there's certain exercises that i feel i need to go higher like i feel leg extensions i rather rep out higher, or walking lunges would feel stupid with just going 5 reps
shoulders i got mixed feelings about, to avoid injuries it make sense to keep the rep range a little higher, still sometimes it feels banging out 5-6 reps just in say military presses might just be what the shoulders need to grow
i feel in general people do the same no of reps all across the board and maybe they shouldnt