i have a Note, i'm not a heavy forum poster, but if you were to look back, you would see that I've owned every iteration (except for the Fan Edition) and I have pre-ordered the Note 8. I originally used Windows PCs for most of my life (26 years), but currently I run almost all my computers on Macs (MacBook Pro, iMac, and Mac Mini). I have an iPhone 7+ and also an iPad Pro (1st Gen)... unfortunately, I just use it to message stubborn people who only care to use iOS/iMessage, and FaceTime... for those who I have been able to convert to Allo/Duo and Hangouts for multiple video messages, they love it, and talk to me on there, then switch back to their beloved messaging device when talking to others.
The simplicity of iOS makes their phones what they are.. but if you're about pushing devices to the limit, and having an almost infinite amount of customization without rooting/jailbreaking then I would say give the Note series a try... The Note (OG1) was my 3rd foray into the Android ecosystem back in February of 2011... and since then, I havne't looked anywhere else for a main device. Prior to that it was BlackBerry and then before that, it was Windows Mobile Phones.
I utilize the S-Pen every time I use my device. I'm no artist or big business buff... but the level of accuracy that you can achieve when using things like the Square App for mobile payments of doodling, just sold me originally. That and the face that it gave you a bigger screen/canvas to use for every and anything you throw at your device (not figuratively).
Even if you buy one and give it a try, the most you will be out is the restocking fee that is imposed by your place of purchase. Other than that, I KNOW you will love the device and all it has to offer sans iMessage