No experience with Jason, but I have to say I’ve spent waaay too much time reading the Quill code trying to figure out how to patch around weird behavior. Which is frustrating because that’s what a RTE library (vs roll your own) is supposed to be. Not sure about v2, but the v1 code is just not very well architected.

There are basic features we’ve held off on implementing for fear that it will lead to a million little bugs.

The Delta format is the best thing about Quill by far. But I’d advise anyone looking for more than bold/underline/italics to use prose mirror.