I wanted to know if any of you had tried out the Creative Sound Blaster X-Fi Surround 5.1 Pro THX 24-bit External USB Sound Card. Is this little gadget worth it? I'm planning on buying a sager np9130 and I'm wondering if it's going to make a big difference. I usually wear headphones or use my Harman/Kardon Sound Sitcks III (http://www.harmankardon.com/EN-CA/Pr...SOUNDSTICKS3AM). Anyone here owns this device and would care to give his opinion?