SVS can probably tell you more about the differences between the two subwoofers than we can, and they supposedly have excellent customer service and are supposed to be happy to discuss such things with you. They are the same price (though shipping might be more for the heavier box), but the cylinder is rated to go 2 Hz lower at - 3 dB. Why not get an extra 2 Hz for no extra money (and probably less shipping, though you will need to check on that)? (From looking at the frequency response graphs that they have, however, it does not look that way; I wonder if they put up the wrong graph for one of them....) At your price point, I would probably go with an SVS, and I would probably go with the cylinder (and would really want one tuned lower), but it is your call.