This is a challenging question that is to be answered. But the simple way you could find out which model best fit you is to first fix on your budget. Then fix on the purpose of using it. If you have been vexed up with the overly heated sound system you had earlier, then it is time to buy those woofers that would not let you experience this heat when the music system is continuously played. This is all because of intelligence mechanism that is designed by the engineers to circulate fresh air near the heat sensitive parts of the woofer, thus keeping it cool all the time.
If you want more sound, then double cab dual models would be best. When the quality standards are met and if the sounds are best heard then what else do you need. However, you should be cautious about playing the full sound as it may disturb your own driving attention. Well, to find such best subwoofer boxes you should look around on the online store where you would get enough of models each with the unique features that are difficult to compare.
While cost versus feature comparison or evaluation is always done, it would be tough for you to fix on certain of features. In other words, you should keep a threshold on your budget so that you could either spend a little more to get a more advanced model of woofer boxes than what you may want or else compromise with a lower version if you could not jump up this little variation in price at the benefit of getting more powerful features. Since it is a one time purchase you should better pull in some reserve of money that is otherwise kept for emergency so that you are done with this one-time purchase of woofer boxes.