Feature:
It is what it is.

Quality:
Heavy, solid, and rugged. Cant really beat it for the buck if you're looking to rebuild cabinets.

Value:
400rms/800 peak for $80ish. Cant go wrong.

Sound:
This sub sounds quite nice for the $. Im a mobile dj and I bought some garbage 12" 3 ways a few years ago when I started. It didnt take long before I just quit using them. Recently, I opted to pull out the crap sub and replace them with these. In addition to some new crossovers, the low end is nice and the sound is clear.

Ease of Use:
Plug and go.

Support:
Havnt used.

Overall:
After rebuilding the cabinets...new horns and crossovers, I couple these Eminence 12's with a pair of Peavy PR15's. Its loud. I push 600 x 2 with my crown and run them in a series. For my normal size venues inside, theres no need for an additional sub. The 4 do just fine.