Which are the Better Subwoofers?

Don't forget to take into consideration the box size required for the sub that you choose. Would hate for you to spend money on something you won't be able to use because your vehicle won't support the box size.

JL Audio 10W6 would be my recommendation. Maybe a little more than what you would like to spend, but they are worth every penny. And they only require .625 cu. ft. per sub. You can wire them in many different configurations as well, to get 4 ohms, 1.5 ohms, etc.