Definetly The Logitech Series......As Their Bass Reprodution is Way better Than The Creative Line Up.....Even Though Both Are THX Certified The Rms Rating Matters The Most And even Though The Creative Has a Fair Enough Advantage of 100W More Rating Than Logitech The Reviews I Have Recieved For Its 5.1 From My Friends Is Just Excellent 8)
Plus The Silver Body Finishing & The Soundtouch Wired Remote Is also a Eye Candy

Plus It also Supports The Gaming Consoles(Ps2 And XBox)Via Its Game Console Adapter