As much as I love my Calyx M, it wows you from start, but after a few hours fatigues kicks in. I can't believe it, but it is too dynamic. But N8 magic wins you over slowly. I would say if you have the money, and don't mind N8 UI/relatively poorer screen resolution compared to other flagship product, which I find very important for larger databases, N8 is the winner.
-------
On somewhat an unrelated note:
Lately I've been looking at chord poly. At stat I just simply couldn't get it, but ever since I have gotten a larger tablet, going back to DAP is just weird, navigation on such a small screen isn't fun, dynamic. AK also knows this, and they are working on a new AK controller AP which a better GUI, (so I'm told), I see future only a place where all flagship daps are basically a poly with a screen. Dap makers shouldn't discount the importance of having a powerful device like apple/samsung tablet as a control point when one is home and stationary.