OK, so I have a dead DLS #300-630(original mity tiny). It was good for me and is still under warranty so I MIGHT keep it, but I think I want to shake the house a little harder. Question 1. Since I can only afford an entry level SVS, are my SVS choices limited to either the PB1-ISD 320w 12" box at $599, or their 25-31PCi 320w 12" cylinder at $549. Which do you like? 2. Is the difference between the DLS and the "economy" SVS going to TOTALY BLOW MY SOCKS OFF, SHIVERS UP THE SPINE, or should I get an intermediate brand at an intermediate price like $300-$400 to shake my room? Remember, the SVS will cost around $600. THE ROOM is 13'x 13' on a concrete slab with wall to wall carpet and under pad. 7' ceiling and one small staircase opening far front & right. THE SYSTEM is a Yamaha 5560 reciever, L & R Sonance 622t in walls w/a 6.5" driver & swivel 1" tweeter in each, a Sonance MC center w/2 5.25" drivers, 1) 2.5" mid, 1) 1" tweeter, dual front ported and mid and high adjustable. Surrounds are Sonance 622t in walls again, facing each other, 6' high & slightly behind seating. Very crisp and deep and loud (without the Sub), nice sounding speakers IMO. The Sub is at the front/left of the room, "cornered in" by the front wall, the left wall and the entertainment amoire to it's right. I need to make a decision and am pretty new to HT. BTW, 70% music, 30% DVD, and I LOVE live concert DVD w/DTS such as Hell Freezes and the new Led Zepp for example, but do sit with the family for "Nemo", "Matrix" etc . . . Thanks in advance, Mike.