Best Sub for CDM-1

I am looking for a new sub woofer for my CDM-1s. I listen to 50/50 music/HT, but music is the most important (I don't care about shaking the walls). Price range is around $1k used. I have heard the Velodyne HGS-10 in the showroom with the CDMs and it sounded amazing. I was ready to buy one and then I saw all the negative feedback on audioreview.com. The HGS-12 seems to be much more reliable.

I am also interested in the Rel Strata III(which everyone raves about) but the only one I could listen to didn't sound that great. It might not have been set up correctly.

I guess my question is if anyone has used the Rel Strata III with a pair of CDMs? Does it really sound that great and clean for music? I'm almost convinced that I don't want to go with the Velodyne because or the reliability.

Thanks,