I had an eD 5.12 with the rear fire type box, and it was very deep (like an HT sub). However, it wasn't very loud and didn't respond well to classic rock and whatnot. However, it hits hard and deep when playing electronica and hip hop tracks. It's a bit too much, which makes it hard to tune it for a variety of tracks.
I recently switched to a 12W6, and it is still breaking in. After a bit of quick tuning the sub is not as deep as the eD, but it is louder. It responds very well to all kinds of music. Overall, I'm a very happy camper