Peidmont probally isn't out the woods yet on their overall plan. Their growth could diminish once the Dash8s start getting parked. There flow length is predicated on numbers there not currently flowing. Their lines are not even almost commutable.
Envoy and PSA are probally equal depending on where you live and frequency of flights to the base. Mabye the nod going to PSA because they haven't finished growing and opening bases.