Having used the new models and old models several times Go big and ported. They can easily take their RMS and then some but depending on the size of the box you may not need that much power. I ran setups with only 200w per sub and they still hit hard. I have also put up to the recommended 1600w to the single 10 with no problems. Right now in my room for my "room system" i have two of the immortals hooked up to 500w between them and I rarely use all of the juice or crank the gain beyond 1/3.