My brother has agreed to buy me a subwoofer for my HT setup for my birthday. He works at Bestbuy and can get either of the models stated above for about the same price with his discount, which is a considerable discount. I won't go into actual discount prices here though. We auditioned almost all of the subs at the store and he thinks that the Athena is the best at it's price point (usually it's $299.99, but the Klipsch is $399.99) Remember, they are about the same price with the discount. I liked both the Athena and the Klipsch, however I was really impressed with the tight deep bass that the Athena provided, even though it's only an 8" sub compared to the 10" Klipsch. Of course it could be the setup of the store (both subs were on opposite sides of the HT area.) Anyone here have either of these subs and wish to chime in with their opinions? Just in case it helps to know what the sub will be used with, I have a Yamaha RX-V630 receiver and JBL NSP1 as the speakers. Also my HT is in a 9' x 18' attic. Any help with this decision would be greatly appreciated.