mulitiple subs/dual subs

Can someone point me to the thread regarding which is better, 8 12" ok subs or 2 12" monster subs? Im sure this has been asked and answered already, but I can't find it. Basically I have a Sundown SAZ-3000D. Good for 3500 RMS @1ohm. So, heres my thought. 8 regular ol subs with an RMS of 450...