Ive never owned a Destroyer, and iirc from the other thread, I didnt say I was any sort of expert on them, just the opposite. I recall them having soft-part problems, and generally being considered a failure. Im sure with a recone from PSI they can be built into competent drivers, but imo why go through that hassle when you could just find a better suited driver that doesn't need new soft parts in order to work for your application. Unless, like wenn said, you just want the notoriety of owning one of them.
If I was looking for a low-production sub that's actually still very useful, Id be looking for a Brahma Extreme. But then, they were basically just a xxx with Adire's dustcap on it.