I am looking for 50/50 sq to spl. A shop here in town that sells them tells me ported is the way to go. no doubt about it. But since I did not buy the sub from them, they will not tell me the box volume unless I pay them to do it.
Sealed will give you SQ and a fair amount of boom, but throw it in a ported box and you should gain a couple db's - although you might loose a couple SQ points.