Out of all the options shown there, the Acer Aspire E 15 E5-575G-57D4 shown in that article is the one that will give you the most bang for your buck. If you're gonna spend $500 on a laptop for gaming, that one seems to be the best one. Alternatively, if you don't need the mobility that a laptop provides and are willing to wait, however, I would instead suggest saving your money for a bit longer and wait until you have enough to build a high-end gaming desktop.
If you already have a decent PC and want something cheap, simple and easy to use out and about, chromebooks are great. They function great as browsers and for writing up work etc. There are ways to dual boot into linux which provides tons of functionality.
As for what specific chromebook, avoid the cheapest ones. Go for something middle of the road with good build quality.
If however you want the laptop to be your main workstation, you are going to want to get a proper laptop for sure. Get something with a decent cpu, screen and storage space.