I'd love a 5X so I could give it to my Significant Other. Then her phone would be up to date, saving me from the nightmares of explaining how old hardware doesn't always run the current software...
It's about time I both win something, and upgrade my phone from Oneplus One. I would go with the 6p. the bigger screen is a must, and the specs are much better. It is googles premiere phone, which I would love to get my hands on!