It is all up to you and the money, if you want to do SPL, then Stetsom 7kd is nice, but for a very strong daily driver, you may want to try the Stetsom 2k6 D 2600 watts at 2ohms Rms, you can drop these down(ohm) and really see the power, These things are strong!! Alan Dante uses this one in his everyday car (VW Passat) and he has metered at 151's and 52's with two 12's,He even told me that he uses them at .7 ohm all day but he uses the box rise as well. But like i said it is all up to you, the 7KD is made up of 2- 2K6D's I can help you pick these up since i am the newest Rep and only one here in CA.