I bought a gaming laptop a couple years ago... it is not worth it imo. A 17" gaming laptop will be big and heavy, it will not be very portable, which is the main reason to get a laptop. They produce more heat, offer a FAR worse value, and cannot be upgraded.
The one situation you should get a gaming laptop is if you live with roommates and therefore have to share a desk at your apartment/dorm. A laptop will allow you to move to the table until your roommate is done with the desk.