This is my dilemma too... I was all ready to go get the Note 5... shoes on, keys on my hand, waiting for the GF and then I saw some sample photos from the 6p and I held off instantly. Really thought about what I was getting... Most of the features I wouldn't use on the Note 5. I'd probably use the S-Pen for maybe 3 work days, until I found a Post-It was faster and more convenient, I saw some of the review videos of all the bloatware on this phone and I was not impressed.
I think I'm going to go with the Nexus 6p as all I want is a great FAST camera (no shutter lag, and sharp photos). Can anyone comment on the shutter speed/lag? Right now I have my OnePlus One locked in "Clear Shot" mode, and I'm waiting about 5 to 8+ seconds for an image to render, otherwise, the shots are blurry, and muddy even in daylight.