Since the start of the year, I've used an iPad Pro and Apple Pencil. I owned a Tab S2 before my iPad and unless the tech between the two versions has improved dramatically the iPad Pro is leaps and bounds better then the Tab S3. Going from my S2 to an iPad Pro felt like going from a 2014 phone to a Samsung S7, been there too. My sister still uses my S2 and the graphical difference alone is jarring.
I don't draw as a hobby anymore, so I can't give feedback on it's drawing capabilities. I'm a writer and I use mine to edit my novels. Using the Apple Pencil is very fluid, just like writing with pen and paper. I assume it will be as easy to draw as it is to write on it. I also use it the take notes in class and draw basic diagrams. I had to buy an app to do my editing and note taking. Everyone who's tried my Pencil is shocked at how easy it is to use.
I'm not one of those people who buy Apple everything either this is the first Apple product I've owned since the golden days of the iPod when phones were a lot less smart. I chose the iPad Pro because it was the best tablet for my needs. Something I could use to digitally edit my writing and assignments and take notes in class. The app I use backs everything up to my Dropbox, so there's no way I can lose anything. There was a slight learning curb the first few days I used it because the texture of the screen and pencil are different to pen and paper but it is very precise.
It's honestly one of the best things I've brought, I use it everyday. The only con I can think off is the cost but I hope it will eventually pay for it's self. Now I have an incentive to edit my writing I'll save on printing costs and I don't have buy notebooks, pens, highlighters, or physical textbooks for my course. It allows me to carry less things to class, which helps physically. I'm pretty sure I caused permanent damage to my back, carrying a heavy backpack to high school everyday. It's been seven years and my back still hurts if I carry anything heavy in a backpack.