Hi, Supro!
I play a Star 20 inch bass at least twice a week. I use a Danmar kick pad covered with a leather patch. My bass is also muffled with a vintage Ludwig bass muffler. I am miced. In my opinion, the sound is thumping and clear! My bass can be viewed under Drum Image Galley, Star Set in Turquoise ( something close to that anyway). Since I have no experience with kickports, perhaps I shouldn't even venture forth an opinion. I have been drumming for forty years though. In my experience, I would say: tune the bass carefully,experiment with various heads, try various pads, clamp on mufflers were invented for such a purpose, remove the pillows, repeat all steps and play that bass!
Brian