Deciding between these two subs, I only heard of SVS 2 weeks ago, and decided they were the way to go, to replace my Velodynr CHT 10. Now deciding which of these two , will best perform...SLAM ! in my home theater room , 11.5'(W) x 7.5'(High) x 21'(long) room. totaly sealed, other than one small air intake and one small heat/ac vent. 100% movies only, with a polk audio RTi 8 floor speakers, CSi 5 center x2 , and RTi 6 ,(x 4) Rear surrounds.. and, a 7.1 Yamaha 5890, 120 wt/ch..