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What's best is dependent on who you ask.

Absolutely true. I didn't feel the Note 5 was worth it for me. I have been buying a new Samsung and a new iPhone every year for the last few years but in 2015 I skipped the Samsung. The iPhone 6s Plus was all I wanted.
 
The iPhone will serve you better when it comes to using Continuity and Handoff. All your Apple devices can communicate with each other over cloud so you get a 'seamless' kind of experience. Thats one reason to have an iPhone instead of any other.

If its technical superiority you're concerned about, the 6s and 6s+ pretty much cream the latest Samsungs in cpu/gpu/battery performance, if you look up Anandtech's reviews (the most detailed and elaborate I have found).

These 2 points address your concerns about the latest iPhone. There are things such as display and camera quality where Samsungs might be preferred, but that's individual choice - as is your choice of operating system and UI.
 
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