I can't make up my mind if I should get the PB12 plus 2 now or wait a while and get the PB12 Ultra 2. How much better does the Ultra sound than the the Plus 2? Right now I have a complete M&K 150 system with the 350 sub. After looking into it for some time, I have concluded that the SVS Ultra 2 and PB12 plus 2 are both superior subs. My M&K is still a great Sub but it sometimes sounds like it is struggling to continously create lots of low frequency thump in certain soundtracks. After finally putting together my speaker system and my Pre/pro setup, I'm getting the projector in the next couple months. The last thing I want to do is upgrade the sub. If I get the Plus 2, It is a wash because I can sell the M&K for most of what I will pay for the Plus2. If I get the Ultra 2, I'm going to have to go in my pocket for another $900 bucks or so. Does SVS have an upgrade program where you could trade in your sub for the bigger model? Also, does SVS still have that home audition where they say, if you don't like it, they will take it back for free? My room is a very problematic room for a HT. My ceilings are 6 1/2" high. The room is an L-shape with the seating area in the longer of the L. From the screen to the back wall is about 26 feet. I am powering my system with the Outlaw audio 990/7125 combo. I'm sure all the SVS fans here must of auditioned both subs. What do you think? As always I know I can count on the good feedback from the members of this forum.