I still love my Nexus 5 but I want to move to Google Fi so a Nexus 6p is at the top of the list of things Santa didn't bring me. He did bring me some coal. And some pennies... yeah, yeah, yeah pennies! (Beavis voice)
I would choose the Nexus 6P because of the great display and the better camera. I would also like to test how Huawei is building phones (only experiences with Motorola, Samsung and LG).