HI, I was looking into purchasing 2 15" SSD for my car. I am running a kicker zx1500.1 amp. I was wondering when i was going in to purchase these. what works best with my amp. Dual 1 ohm or dual 2 ohm. also is the flatwind coil worth the extra $20 (i have no idea what it actually does). the BP power worth the money? (once again no idea) and what should be decided on the QTS? If anyone can help me out that would be great. I am wanting to order these as soon as possible so I can get them installed THANKS