I purchased an SVS PB12NSD a few months ago on the advice of Bob Reynolds. I'll thank him again. I called and talked to the SVS guys and gave them some room dimensions and told them what my current budget was. They hooked me up and 4 days later a new sub was at my door. With some help from a friend, setting it up was smooth, and it's sound is awesome. I will admit I don't have much experience with subs, but the ones I heard that were better than the SVS were 3 times the price. Also, I mocked up cardboard in the dimensions of the different subs I was looking at to check to see if it would fit in the different locations I could place it.