If you look at the spec of the majority of JBL subs they don't go below 30Hz anyway, and more importantly the curve drops off rapidly where they do go below 30Hz. As for the BOSE sub, when you see the speaker you'll realise it's just not capable of the excursion needed to produce real sub notes. The BOSE sub is little more than a big mid bass really....
For quality, you could do much better than the JBL in the link. Here is the owners manual - it is being driven by just 100 watts. That won't be enough to control a sub moving at sub 30Hz. If you want real bass, go for a JL or Focal sub and have it put in a proper box. A quick release set up can be arranged at the speaker terminals so you can pop it in and out, and you can hide the amp away somewhere else.
Other music you can listen to is the original Superman compilation - loads of sub sonice bass in that.