I was looking at the Kicker DCVR12, comes with 2 12' ComVR subs. I have 2 questions, the first one is does this come in the 2 ohm CRVS because I have searched and I think this combe only comes in the 4 ohm DVC's. My second question is this combo costs $400, if I buy just buy 2 of the subs it would cost alittle over $300, and then I would have to buy a box, which is better?