I know that I am trying to get an SVS sub in april or worst case X-mas. But I would like to get one in april. I think if I choose the Ultra I will have to wait till x-mas. Now I know I want the 20-39... whatever it happens to be. But do I really need an Ultra? Yes I could tell a difference between the Plus driver and the Ultra. Here is my room. 320 Sq Ft with vaulted ceiling, wall to wall fireplace on right side of theater room, left side is a large opening for the dining room, stairs, and hallway. I get a decent amount of bass from my boston towers now. So I dont need much more. But I listen to alot of music. So musical accuracy is a HUGE factor.