i wouldn't buy either.....especially a pre fab ported, thats never a good idea. If you go sealed, which is sounds like you dont want to, you could get away with that one, but ported i would build one. I like how they garontee that you will get at least 3db's more ouput out of there, when toss my w7 in there and probably see at least a 3db drop....i should buy it just so they have to buy it back.