I'm not gonna hate. I like them. They're good for what they are. A good sub with a good enclosure. What's good about it? The fact that the enclosure is made for the speaker which 90% of DIY aren't. It's also going to be more efficient than a classic sealed setup so you don't need as much power. But the results are highly dependent on placement and vehicle shape. I helped a friend install one into his '03 mustang trunk. It blended well with the factory mids and gave a nice thump to your chest when it hit.
You won't always get those same results. It installs just like any other sub/amp setup. Do you have specific questions?