Advice for buying a new gaming laptop?

Hello and thanks for considering to reply to my question.

First let me say that i'm not an avid gamer, i play for about 20 hours a week max and I'm not very skillful, but the thing that annoys me to the point of insanity is when my screen freezes or my laptop crashes.

I'm going off to college next year and will be staying at dorms for the first two years (probably) so i need a portable rig, i know that building my own desktop would be much cheaper and better compared to what i can get on a laptop. I'm looking for a laptop that looks good, that isn't over 5 kg (11 lbs) , has a RAM of or above 16 gigs and has a killer graphics card. I have a budget of 3000 dollars and keep in mind that I will use the laptop for all sorts of multimedia purposes. I don't know a lot of brands other than alienware or asus rog. I need a brand that i can trust, that won't fail me after a year (cause 3k is a lot of money).

I hope you can help and i would appreciate personal experience responses rather that just spewing out specs i can easily find online.

Lenovo Thinkpad

Or

Alienware Laptop

Alienware is currently the best for gaming laptops, but they tend to be overpriced.

Research before you buy