Backpack for 17" Gaming Laptop (Alienware 17)

So guys, I have an Alienware 17 (R2, 2015, GTX 970M) that I am more than happy to lug around my lab. But my trusty Samsonite backpack is beginning to show signs of age and tear at places. So, I am in the market for a new one that can fit my laptop, the 240watt adapter, a couple of books, portable power bank, headphones etc.

I am not sure I wanna splurge on the Alienware backpacks merely for the brand. But I am open to the idea if the opinion of this forum is good!

Any suggestions at all?