Up until now I have been running 2 deeps and a medium. Because I didn't have drawn supers I assumed that is why my bees hesitated to use them. This year I had enough drawn or partially drawn frames to fill several supers.
Even though we had a tremendous Locust season and are still in the flow my hives still aren't using them much and are instead filling the top deep rather than using the drawn comb in the medium supers. Today since it is also warm enough I decided to put the super in between the two deeps on one hive. That hive had almost zero brood in the upper box, but had several frames of capped or uncapped honey. I will see if they will use the medium. It was probably a bad idea to isolate the small amount of brood, but if they manage to fill both boxes I will consider it a win.
I had been using double deeps because I would consider my location to be northern, but maybe my local climate in the river valley in zone 6b would allow a single deep/medium configuration?