I just don't understand anyone buying a sub today other that a Velodyne DD series. Okay, maybe some other sub, but mating it with the Velodyne SMS-1 or other room correction system should be a must.
Knollbrent, regardless of how good the Piega is, there is nothing in the Piega that is going to fix the bass peaks in your room from the Piega sub. And you will definitely have them!
I have a DD-12 in my 2 channel setup and I had always fought bass issues in my room. The digital room correction in the DD-12 has given me incredibly powerful and fast bass without any boom. It only took me about an hour and a half to use the room correction right out of the box. I couldn't believe the peaks in the curve when I first hooked up the DD-12. But the room correction software has given me a virtually flat response down to 22 hz. They have a free upgrade (I haven't bothered) that has an "automatic" correction mode which would make things even easier and quicker to use if one chose to use it.
I realize that there are many good subs available, but the ROOM can make even the best sub sound bad. I am sure the Peiga sub would be fine with your c-10 ltds, but believe me, you will never get out of the Piega sub what a DD series will do for you (unless you use a SMS-1 or other room correction.) Just my humble opinion.