I have blown already the cheap Boss Phantom and HiFonics HFX12D4 subwoofers with my MB Quart 1500.D Monoblock amp. They sounded way good but after 5 minutes at high power those subs would just go up in smoke. I am assuming its from pumping roughly 1400watts to them. So with that being said I am in the market for 2 more subs. I do not want to spend more than $150 for both so which speakers would you buy? I have read great things about the RE Audio SRX and have found them for $68.99. A guy off craigslist claims the Infinity subs are better for the price as he is trying to get my HTS polk audio subwoofer. They are going for $61 each. I do not want to have to buy subwoofers again so I need something that will handle around 750Watt RMS at 1ohm. I did the big 4 upgrade and the amp has no problem pushing it. So if anyone can help me find a ******* subwoofer so I can have a great christmas installing my new subs please respond! As you can see I am into budget/best bang for the buck subs =p I am not rich and have limited money as I am selling my Polk PSW505 Subwoofer to get 2 new subs for the jeep. Thanks alot guys!