Depends on how much space you want to give up. I have 2 12 DVQs in ~5 cuft @ 19Hz each for home theatre and am using a 12VQ in ~3cuft @~22Hz in the car all with mid-inserts.
Ported is awesome! But then again they should work really well is small sealed enclosures as well.
i forgot to mention, i want to use the sub in car, bmw e46. i don't mind if the enclosure will be ported...
as i can see i have two ways to use this sub, to put in the spare tire holle or to make an enclosure, vented or compresed.
Advice.