Just finished Metroid Zero Mission yesterday, yay! Now I've started Aria of Sorrow in preparatior for Belmont's Curse that is launching soon, I played the demo and it was great! Loved the design of the first boss.
I also want to play Metroid 2 now. I'll be playing the AM2R fan remake since it follows the same style as Zero Mission and Fusion, but I do want to check out Samus Returns later since people say it feels like a prototype for Dread.