Upgrade ....streamer or amp?

Having decided to keep my Merlin TSM MMs, I was going to upgrade my streamer (Bluesound Node 2 ---original version) and my amp ( Billie....original version). However, recent stock market activity has my IRA in a shambles, so I am only going to upgrade only one of the two. 

Any thoughts on which to start with?  I was considering both the Bluesound Node Icon, and an upgraded Billie (used....after new one comes out)

What say you?