Yes, Ive seen some of those tuba kits and they are hugely impressive as long as their size. I would love something like that, but I've gpt tp be able to fit in my car haha. Do you really think though that the Dayton setup is any good? I could piece together a decent subwoofer myself as long as I had a box(not really looking to make my own at the current time). The reason I wasn't so crazy about the dayton case is that it's rather bland and plain looking. It isn't bad, but it certainly looks cheap in my opinion though.

Also that SVsound woofer does seem pretty nice, but for 600 bucks I would of expected a little more then 300 watts though. It does have a nice range across 400 to 20 hz, but it only does it at about 93 Db, some nicer units push 100 easy. It is also pretty big, that must be why the curve is so flat..