I still use echo location, tap tap tap with a small hammer. If ya got straight lumber, it works well, if the studs originated at Home Depot, yer just as apt to find the edge of a stud
When I remodeled my house 15 years ago, I put protection plates over wiring and plumbing, protection plates are in most building codes now
But as a land surveyor, I have driven a rebar property corner thru a misplaced water line