The ASUS G73 great laptop, my friend owns it.
Based on hand-to-hand experience with , the only problem you MIGHT face would be the heating problem. His laptop overheats easy and shuts down once every few days (tolerable), even with a decent laptop cooler and positioned on a desk. (His laptop isn't dusty either.) I've also heard from him that he wasn't able to play music/game simultaneously? (It automatically shuts down if done so.) He might have just gotten a bad one. [He bought it NEW around $12xx]
So don't assume this will happen to your brother. By the way..This Laptop is HUGE and not to mention heavy. (Well what can you expect from a beastly laptop?
On the PRO side.. This laptop is a beast, I've seen him play most high-end games on medium setting without a problem..and it's aesthetically pleasing too, to some people. (Looks a little bulky to me)
Don't just listen to my advice though, because I only know this laptop, there might be other laptops out there that might be cheaper and have almost the same specifications. But coming from myself, I would definitely suggest you to get the Asus G73 Laptops.