MSI Trident X or Alienware Aurora R7 for gaming

So I’m thinking of getting into PC gaming, and I’m looking at some **fairly** cheap desktops that also have good performance. I’ve narrowed down my search to either the MSI Trident X or the Alienware Aurora R7. (or its Threadripper counterpart) I couldn’t find any other online comparison of the two, so I decided to ask a forum. So, what do you guys think?