Personally I would prefer a Nexus 6P because I love my Original Nexus 6, however I'd like to get my wife on Project Fi and she does not like a bigger phone so the Nexus 5X would also be nice.
I was always told by my parents to keep my pants on and be patient...
I'd like the One Plus One because it will look good on my Google + page... JK
It's an awesome phone and it would be really cool to have this flagship killer phone.