These are great little premade sub&amp-in-a-box type setups...relatively cheap, effective, and decent sound quality. It is true, the new Basslink II has a square woofer...and as a side note: due to the physics of sound, a round woofer is going to produce more quality of sound than a square is, as any shape that isn't a round will have some sort of distortion penalties (though squares incorporate more surface area on the cone and thus produce higher SPL than the same size and power in a round). Just depends on where your preferences are. I used to have a 15" L7 square...but then again, I competed in SPL competitions...back in the day when SQ wasn't a big deal to me, lol.

The Basslink is, as you know 200W RMS vs. the II is 250W RMS, both 10" woofers. They're pretty tough little things too, so I doubt your dogs would be able to destroy one on accident, unless they specifically attack it...then that's a whole 'nother story. Be mindful of how you route the wires, as the dogs can easily chew them. I sold the original Basslink for some time, and installed a couple of them as well; it sounds fantastic if all you're looking for is a little more kick to your sound system, no major bass. I can't say I've had any personal experience with the Basslink II though...

Oh, and Amazon has some of both the original Basslink and the II in stock