I currently own a 20-39cs+ and I am thinking about getting the new CS-Ultra with the SS driver(I'm still within the return policy). The 20-39cs+ gives me plenty of bass but I wanted to know how much better the new CSU is than the 20-39cs+. Besides more SPL is it more accurate? Do you feel the new CSU be worth the extra money? With the intro of the CS Plus, I didn't feel the Ultra had enough of a performance edge to justify the difference in price. Now the great guys at SVS are sticking their best woofer in the Ultra w/out any price change. They posted the info. on their site just a few days after I received my 20-39cs+. If I knew this before hand I might have just went ahead and gotten the Ultra to begin with. If you guys persuade me to go with the Ultra, does anybody in the DC area want a 20-39CS Plus for the B-Stock price of $540?