between the sa-12 and e-12, other than more power and probably louder, are the sound between the two similar? I would be using single sub, most likely sealed to spec or close and pushing 400 rms to the e-12 or 700 rms to sa-12 just as a moderate daily driver. I am just debating if it is worth paying $200 vs $110 for moderate bass in a camry trunk unless sound quality differs between the two.