Basically, some people (or their spouses) prefer a cube -- they can treat it as an end table or plant stand, whereas the ol' cylinders are pretty much nothing but subwoofer. Short of something like a Sunfire (which is sort of hard on the pocketbook), a good sub will tend to take up some floor space. The SVS cylinders don't take as much as some, although they make up for it by being taller than average. At that point, much of it boils down to personal preference and space constraints.

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