Due to space available and budget constraints I can’t go with anything larger than the PB1. My system is used primarily for SACD/DVD-A playback (80/20). For SACD/DVD-A, I run my sub dialed down to 40Hz because my mains (set to large in 2900) cover very well down to 35Hz. Will I be able to tell $650 dollars worth of a difference between the CHT-12 and the PB1? Or, should I spend my upgrade money on a used 150-200W three channel amp (Adcom or Parasound) for the front sound stage? My modest 5.1 setup: Toshiba 35" h/k AVR 525 (ctr&rears) h/k PA2000 (L&R) Denon DVD-2900 JBL S310-II's JBL S-Center II JBL S36-II's (rears) Velodyne CHT-12 23'x18'x14' LxWxH (vaulted) Living room.