I found it tricky at first but got a mostly smooth setup on two machines now with wide variety of uses. Definitely for day-to-day use the Ubuntu Studio app has

I found it tricky at first but got a mostly smooth setup on two machines now with wide variety of uses. Definitely for day-to-day use the Ubuntu Studio app has actually been the most helpful (direct control / visibility into the Jack <-> PA bridging is great), or a combo of qjackctl and Carla for more Audio-focused stuff.