I use the iPad Pro to take trial notes. I have been using a stylus since the first iPad and cannot recommend the Apple Pencil more. My handwriting is like a sloppy serial killer's attempts to write Chinese as it is and this fine point and responsiveness really helps. My only criticisms are that it doesn't come in black, loose cap (I have a moxiware magnetic sleeve that is black and a silicon holder for the cap, it looks like a special needs Apple Pencil), overly long for storage and does not have the eraser function of the Pencil by 53 (if you think the Apple Pencil is too expensive or do not have the iPad Pro in any configuration, it is worth a purchase) or the Microsoft Stylus.
Bottom line, if you are an artist, it is great for drawings (stick figures are somewhat of an enigma to me, but an artist friend of mine drew a photo realistic picture in Notes!). If you want to use it for note taking, it is really the best you will get.
If the lack of eraser function is an issue (given my terrible handwriting this is important to me) Notes Plus has always had a feature that permits you to strikeout quickly what you want erased and is pretty good. It is why I use it as my primary note taking app. Notesthelf is great, too as it seem the best combo of opening up a .pdf and marking it up and taking notes as you wish. That is just my opinion, there are a ton of great note taking apps you really can't go wrong when you have the Apple Pencil as part of the equation. Also, if I didn't keep my notes on an iPad, I would use the same pad for multiple cases and lose my notes all the time.