dear all, need advise

brand - any
budget - 4.5k
usage - everything (autocad, gaming, entertainment, work)
screen size - >15 inch
other - good battery life, heavy duty build
weight - any

had a lenovo y50, battery life was short. since i bring my laptop everywhere and live with it, build quality important. my current y50 full of scratches, back case dented, broken at edge, bezel crack....