I have been going back and forth on my mission to get the best bass that I can get. I have bought this and I have bought that. I have run two subs, then one and then back to two. I have contemplated SVS or HSU as my final decision. I think I will now go with SVS... I was leaning to wards two VTF-3s, but the extra money spent on this would not be very wise imo. I have been in the HT gig now for about eight months and the first thing that grabbed me was the big screen that I won at work. Then the second thing that really got my attention were the subs that I received with my Ken 504."I herd the sub with the 504 was maybe not what I would be needing or wanting so I bought the WM-40 to at the same time". Yes it is true--I am sub obsessive and want the most I can get. I run the Vel ct-150 now and have been mostly happy with it, but I know this can not be my final resting place in my sub endeavor. Whoops! I am ranting on. Here is my QUESTION? Option 1-- 1 cs ultra $1249 with a second in the future. Option 2-- Dual cs+ 25-31 $1299. Option 3-- Dual PCI 25-31 $998. I use our living-room as our HT. It is open to the dinning-room and the whole two rooms measure 12w x 24L with 10ft ceilings. One entrance to the kitchen off dinning and one entrance too the main entrance of our house off HT living. Level 3 center-- Advent AS 2s towers mains and my stock Ken mains as surrounds. I use our HT for 98% HT. Any help or thoughts out there on which option might put me in bass- LFE nirvana? If there is such a thing? Please forgive for my long post.