box even though a flat responce 20hz ported box would sound much cleaner and be slightly louder. you want sealed: Sonic Sub Boxes 1H10-0.7-BLACK (1h1007-black) Single 10" just add pollyfill to make the sub think the box is bigger.
Only reason I was going with a sealed box was because that is what Mb Quart recommended. Must be on lunch eh? haha. I will check out your links here.