I definitely am getting itchy to create design of my own, but there are so many mid-century designs that I really like that it's hard not to go down the replica path. It's definitely in my future, though.
Of the two chairs you referenced, I definitely prefer the first one - Masculo. It's easy to see Wegner's influence in its design - its consolidated back/arms look very much like the one on Wegner's office chair. And the dining room chairs that you built have that flavor, as well. I'll follow your chair build regardless of which direction you go.
"The good chair is a task one is never completely done with" Hans Wegner