At this point I have determined that I am going to buy a DD M1C amp, just not sure with the sub. I have a smaller car right now but in the future will get a newer better vehicle. I am not sure what to go with. They both need 33hz and the box isn't going to be entirely different between each other. If I had either way they will both be bought in 2 ohm. If I had the 2 1510 they are both 600w rms a piece while the 3510 is 1200w rms. If had the 3510 I would probably keep it for my new car. But if I had the 1510 I would probably sell it to a friend if I was getting a new car. I would say that I would get a new vehicle in 2-3 years.