Guy locally is selling a Sunn 6x12 cabinet for a pretty cheap price. I wanted to get peoples opinions on them being used as bass cabinets. What is good about them, what besides weight and size is bad about them. FYI, I would be using it with one of two heads. One is my Heritage SVT, the other is a Acoustic Control Corp 270 head. I know someone here has put this combination together at some point in time. Thanks.