I just received my Jot Touch 4 and thus far I am really pleased. The precision seems to beat the standard Jot, which is pretty good. The touch is longer and somewhat heavier, which makes it more comfortable in the hand. The plastic disc on the nib is slightly smaller and the accuracy seems to be improved.
I primarily use it with Goodnotes for handwriting. I'm not sure that the "shortcut buttons" on the side are anything to get excited about, and I have not tried it out on drawing. But---my first reaction is that it is a winner. I will add to this report later after I acquire some experience with it.