I was wondering what the difference would really be in using 1 or 2 subs, either 10's or 12's? I have an ext cab chevy truck if that helps. I was basically wanting to know if it would be more worth it to buy one sub and put a better amp on it, or two and a more inferior amp. I was thinking about going with ID V3's which ever size/quantity i decide on. Do you guys see a better choice for my application (more for SQ than SPL). And what amp would be a good choice on a budget of no more than $300 for amps and subs? So basically there are 2 questions here, 1 or 2 subs...and a good choice for my truck with that budget.