Excellent review, Are these priced similar to the IB15? I was going to wait for the Sundown IB woofer but I may have to look in to these now.

Edit: Found pricing on AEspeakers.com

The SBP15 will be available to order immediately at $289 individually. Current lead time as of 3/7/11 is about 4 weeks. SBP12's will be $249 each and have the same lead time. I expect to have these stocked for immediate shipment in small quantity once I am caught up on other orders here.