Hello. I have a 17" MBP. When watching TV/movie or play games/classical music from it, the quality of the speakers do not seem to be very good. What are the top three audio systems for the Mac/PC these days? My room is not very large but I may move the system to a larger room later. Not sure yet. I want a system that immerses me in a realistic 3D environment. Are the Logitech speakers with THX good? Thanks.