a Stryke 15.6, or the SVS Ultra package? The situation I find myself in is that I currently have a pair of Hsu TN1225's and the Hsu 500 w amp (800 watts with both the 1225's hooked up)and 5 nOrh 9.0 speakers. The problem is that the woofers on the 9.0's can only handle 60 watts. I am very careful on the volume when I play in either 2 channel, or HT. I do play them plenty loud for me most of the time, but safe enough not to blow the woofs. I like the bass from the Hsu's OK, but would like my hair singed and blown back during HT explosions! They would only bee used for HT or DVD-A, as I use nOrh subs for 2 channel. So the question is if I have never bottomed the Hsu's, would I gain anything by going to the SVS Ultra package, or the Stryke 15.6? Thanks for any help or advise.