I'm not sure if I'm keeping either of them. Be aware that Google will make you work for an RMA if your reason is the blue shift. They will respond that the screen "is working as intended". In fact, I've heard that they are now flat out refusing RMAs for the blue shift. It took me about 20 minutes and lots of photos before they relented and sent the RMA.
If I'm spending $900 on a phone, I'm going to be picky about things. Especially the screen! I think we've all come to expect pretty major advancements in all of the technology packed into these things with each iteration. Everything (especially the camera) about this phone reinforces that. Except for the screen. I want that screen to be 3 years ahead of my Nexus 6 - it feels and looks like it's 3 years behind it.
So, long story even longer, I'm conflicted. I love everything about this phone but I hate the screen. I have 2 days left to decide if my wallet rewards Google for a great camera or I wait to see what next year brings.