Originally Posted by sksk3021
Heavier weights lead to increased strength with a by product of increased size. Lower weights more reps is actually better for hypertrophy.
If hes been on weights before hes not an absolute beginner. Id definelty try heavier weights as Ive seen people get bigger quicker doing heavy weights/low reps.
Depends how serious you want to take it I suppose, for your casual gym goer id say the long term route isnt realy the option they should take.