5'7" 155
5'9" 165
5'11" 175
This is the ideal weight for those heights at a normal bodyfat, for average people.
Being the same weight at 5% bodyfat would be very fit/muscular
Being 10lbs heavier or more at 5% bodyfat is where big starts
Being 30lbs heavier or more at 5% bodyfat is where huge(juiced) starts
The bodyfat being key here...it's easy to be "big" if you are +20% BF