The MTX will probably win in the SPL department. I'd rather have the IXL though //content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif
probably MTX for spl, and IXL for SQ, i don't know how the SQ of the MTX is, but the IXL is a SQ driver that also gets loud, maybe not as loud at the MTX, but loud enough for the average basshead