I have narrowed my amp decision down to these three. Now I just want to know who makes the better product. If you have heard any of these, let me know what you thought. I prefer not to look at you tube or ROE, because of the sound distortion. I am looking to hook up a SQ system. I am planing on hooking these up to two ID12D4 V.3 - Image Dynamics 12" Dual 4 Ohm V.3 Subwoofers in a sealed box.