I'm looking at 4 12's in a large ported box? I've also considered 6-8 HFi12d4's. Will the HFi's be a waste of time vs. 2 CVX 15's in 10 cubes? The Hifonics Zeus and the Power Acoustik P3-12W looks better on paper than the Cvr. I've people calling the PA paper weights, but haven't seen any bad reviews. Which one do you think is best? The amp is a 2600 watt Brutus. I know there's better subs, but this is a budget setup.