Both make a great playing cue and the current Schons are excellent IMO. I think there was a brief period at the end of Evan’s time there where things weren’t quite firing on all cylinders, but Jon is doing good stuff there now. I have friends who have recent Schons and they’re great playing cues. They’re also very consistent, a Schon almost always feels like a Schon.
Jacoby is the same, great cues. They offer a lot of customization and multiple joint types. They vary a little more in weight and balance than Schon does typically. I’ve loved some and not loved others. But that can be good because they can make a cue to fit your preferences. For example if you like a soft hit, rear balanced cue you’d have a tough time getting that with Schon.
Overall, in my opinion, they’re of equal quality and both good choices. Schon tends to be closer to my preferences for a playing cue personally. I don’t own either presently but have had both in the past.