Your always best off building your own. Logical increments, ://www.logicalincrements/ is a decent starting point, but you’ll want a better processor and more ram than they suggest most of the time, and you’ll want to avoid using multiple GPUs. The site was built around computers for playing games, and UE4 is a game engine, but that extra RAM and CPU power really comes in handy. Also you can always save money by using a cheaper case and cpu cooler than the ones they suggest.