Hi. This is my first post, so cheers everybody . I am ready to go with my first sub and need your expert advice. I am mainly interested in 2 way Hifi,(music), but have a basic AV set up which I am planning to upgrade little by little, so movies are important too. I have A Marantz SR4200 Reciver for 5.1, feeding my hifi Unico amp for front end AV through pre-out, so I actually use as front speakers the same Totem Arros that I use for HiFi. In a few week I will be moving to a Victorian house end of terrace, so I can push the volume as high as I like . The concert hall will be about 6.5x4.4mt (20"x14"). Size of the beast is not really a problem, although I prefer something not requiring a team of dockers to move it around, let's say below 110 pounds. My shortlist include a model from SVS, or BK XLS 200, or the Monolith. - I am sure that the SVS will give me the best quality . It could by the PCi 20-39 or the RB12-ISD/2, the latter seems to be the SVS model most suitable for music (is that correct?). The cons for the SVS are the higher price, the troubles about international shipping and custom duties (can anybody tell what I will end up paying in full for the ISD-2 costing $900?), the size and weight. But my main concern is that it seems that SVS subs do not have separate volume controls for high and low level inputs; so I believe every time I go from music to movies, I will have to phisically get up and readjust the whole set up. Is this right? - THe BK XLS200 will be a cheaper, reliable choice, also simpler to buy and to get support in case of problems; it is much lighter and, from what I read in this forum, everybody seems to be a happy owner, especially with music. My main concern will be that it may lack the power to fill my medium-big room, but I might easily integrate a second one in the future. - From the recent review, the Monolith seems to outclass the XLS 200 quite easily (at least for movies), also looks like a great bargain and I am seriously considering it, although I would be really interested to read some feedback about music capabilities. The set up of the unit for both music and movies is very important for me: I believe both BK models allow the following: connect the low level to the sub pre out in the AV receiver, connect the high level to the hifi amp; adjust the the cross over frequency of the high level for hifi, disable the crossover for low level. This way I should be able to switch from music to movies without any further fiddling in the subwoofer. Does it make any sense? Sorry for the long post, but I will not be able to demo any of the above models and will have to buy based only on your suggestions.