You said you left IPhone few years ago, but you also said you own every model in existence ... some which came out only months ago. You also said all your IPhones work very good, doesn't that also make them just as justifiable with the just work slogan you accounted for the Note 4? And you also said all your iPhones work, so why hesitant to go with the iPhone 6 Plus?
Yes,,,, I have owned every model iPhone ever made (except the C).
And yes,,,, all my iPhone's have worked perfectly,,,,,,, but I also use Andoid devices as well,,, I'm not married to just one OS.
On a side note (pun intended) 2 days ago I purchased the iPhone 6 Plus and spent those 2 days comparing my Note 4 to the 6 Plus, my verdict,,, no contest at all !!!!
My Note 4 felt better in the hand, took way way way better looking pictures and video and the Note 4 also records in stereo as well while ALL iPhones and iPads only record in mono... It makes a huge difference,,,,,, and be it stereo or mono, the Note 4's overall sound quality is also much better than the recorded audio from ANY iPhone or iPad,,,,, even most of the Android tablets record video in stereo as well.
Anyhow,,, I have very long list of how much my Note 4 beat out the 6 Plus I purchased,,,,, needless to say I returned the iPhone 6 Plus and gladly paid the restocking fee.
With tablets that's a weird one,,, as I like iPads much more than Android tablets even though my iPads are the Apple products that give me problems while my Android tablets do "just work" with no issues at all.
If it were not for iMovie (which I use All the time) and all the great iPad optimized apps I would probably drop Apple completly and be 100% Android,,,,,,, sadly Android does not make a single video editing app that even comes close to iMovie and many of the Android apps are not optimized for Android tablets,,,, Google/Android apps work great on Android phones, like my Note 4 but are not as optimized for tablets like most iOS apps are.
Anyhow,,,, I Totally Love my Note 4 and my new 128gb iPad Air 2 (when it does work),,,, so that's were I'm at now.
But I will be re-purchasing a Galaxy Tab S 10.5,,,, that 2K AMOLED screen on the Tab S is simply amazing and totally destroys the retina display of ANY iPad.
Cheers
Davyo