SVS question: Should I get the 25-31CS since I have a spare seperate AMP (Hi-End Tamberg from 1986 150Watts/8 Ohms per channel) or the 25-31PCI? What are the pro's or con's on the CS with an existing Amp or the PCi? Should I use a Preamp with the Amp since the Amp has no volume control? I do not have the manual on my Tanberg Amp so I do not know the rating at 4 OHM, does that make a difference? Is any one sorry that they bought a CS and not a PCi? I just received my new ONYKO 600, my first 5.1 or 6.1 receiver. I am using B&W DM2000 (from the mid 1980's) for the L/R and hope that the B&W LCR60 S3 are a match for the center.