Earning burning aethers in Inferno Horde Activity

Sorry I am new to playing Inferno Horde. It seems that the Spoils of Greater Equipment needs 200 aethers and either gold or materials chest will take the rest of your aether. My question is, what is the point to get over 201 aethers as anything over than that you are still only going to get 2 out of 3 chests.

My understanding is that the more aethers you have when you click on either the gold or the materials chest, the more it will drop. So the higher above 200 you have, the more you’re going to get out of whichever chest you choose next.