okay so i was looking to getting some new subs, and right now i was choosing between two orion XTR Pro for $129 each, two Rockford Fosgate p2 for $99 each. Both brand new dual 2 ohm, or also two diamond audio m5 121.8 single voice coil for 60 used. what do you guys think? My amp is an orion 8004 puts out 400x2 rms bridged. i know its pretty subjective to what sounds better for my money but i just wanted to get a general idea. i've had p2's before and i liked how they sounded and also open to suggestions for other subs. thanks in advance guys.