Shockers will rip everything that people have suggested like 2 new one's. although a ton of power is needed to run those bad boys to their full potential i know they are no joke. heard my first setup of them this past week a single 15" Shocker 3 with an earthquake d2 on it. much SPL from that setup especially in a civic hatchback.
they are simply amazing woofers for SPL applications. i know the one i had heard made me like double over it hurt so much being in there. they are just a better woofer and can be used as a daily driver, a very LOUD one but still used. the RFL's are loud but sound horrible the shocker's are loud and sound decent.
rfls are for competition only and they still arent the best there. shockers can be used for daily and for comp and are very monstorous subs.... im talkin this things kick ***!!!!!!
Judging by the way you put your statement, I'm going to say that you want a lot of SPL with very SQ in a daily driver vehicle, not just a compeition (burp) vehicle(dont attempt to play music through one of these)
I agree with everyone above that suggested Shockers....very loud and very durable.
- Steve
PS: I'm going to take a wild guess, and say your...15-19 years old, am I right?