Given the choice of an American Eagle ERJ or a Midway 737, I would take the 737 even without the AA miles. On my 2 flights flown on JI since their return it seems the FAs on both flights were actually happy to be back serving the pax. I wish JI well in its comeback and hope the extra competition keeps AA fares lower too for those who fly AA eagle instead on competing east coast routes.
Besides Midway, the other airline keeping RDU fares low is Southwest, which seems to be doing quite well there with load factors and adding of additional cities.