I want to know if it is worthy the money from using two speakers to 5.1. I currently using the two speakers from my cd player which has about 50w power total. I'm on low budget, so I decide on the Z64 and sound plaster live 5.1 which cost just about $100 at newegg. I will use mainly for games, dve, listen to music. However, I don't want to waste a hundred bucks just to hear that it sound no differents from my two cd player speakers, which in my opinion is pretty good. Any thoughts?