Reply to Traktor X1 MK2 vs XONE K2 - Wich one would you prefer?

Hey guys,
I currently own a Faderfox LV2 but i want to upgrade to a big size midicontroller and after some searching and looking i finally decided to choose between the XONE K2 and Traktor's X1 MK2.
I play deep/techhouse and use two turntables and a XONE 92. Needles to say but 4 tracks, sync etx is nothing for me.
Now, i would like to know your opinion about choosing these one of the two controllers. What's better and whats worse?

Thank you!