Hi Emil,
While my preference is for front ported systems, I chose rear porting for the Eilish in order to keep the cabinet as small as possible and to enhance the bass response due to boundary proximity.
Many put the port on the back of the enclosure to minimize port noise. The penalty is that placement in the room often becomes more problematic. By placing the port on the front you minimize the placement problem, but must be sure to deal with noise coming from the port. Nothing is free and everything has its trade-off's.