Is Free-Air really an enclosure? Trunk, I guess.....
Maybe you should have added Isobaric enclosures, to be fair.
I love sealed even thought it is the least efficient, because it the flattest response curve and can play down to 20Hz.
I never really understood bandpass enclosures: "Lemme get this right, you're using WOOD for a crossover"?
If you think ported enclosures sound bad out of their tuned frequency range, listen to the mud that comes out of a bandpass enclosure.....but man, they hit hard!!
To each his own...