Decided to go with an SVS ( after reading all the raving you guys do about them )Room is about 2100 cu ft 9ft ceilings. all sheetrock. 7.1 with medium sized Onkyo speakers ( got a 6.1 set at frys for $180 and got an extra surround back from onkyo direct). Yamaha RX-V750. I can spend up around $800 if neceessary looking at the PB1-ISD 20-39PCi 20-39PC-Plus even the PB2-ISD if you really think i should go that high. I do an equal amount of music and movies ( slight bit more movies though, got some good bass ones i wanna try ) I just really need input since there is no place for me to demo them. And is there any real difference between the Cylinder and box ones?