I have not found any better subwoofer from your site, though since I do not read Japanese, it is possible that I missed something.
In the U.S., SVS subwoofers are a great value. With an added $350 shipping, they become a less good deal, but they are still great subwoofers.
You might want to ask SVS about shipping of other subwoofers they sell. Back when they used to charge people in the U.S. for shipping, the cylinder subwoofers cost less for shipping, as they are lighter weight. (They are able to weigh less because they can make the cabinet thinner, as a curved surface is inherently stronger than a flat one, so the less weight is
NOT a sign of an inferior model.) If you have no objections to a cylinder subwoofer, you might want to ask them what it would cost to ship the similar PC12-NSD:
PC12-NSD
It costs $50 more, but given that it weighs 49 pounds instead of the 66 pounds of the PB12-NSD, it
might save a little money going with this one instead, though you will need to check with them to determine if this is the case or not.
The cylinder subwoofers take up less floor space and go taller than the box models that are similar to them, and they are also easier to move, both because they weigh less, and also because the diameter makes them pretty easy to grab onto. I own SVS cylinder subwoofers, and I like them very much.