So I am really looking into buying some new speakers for my MacBook Pro. I would really like some surround sound ones but I have no idea which ones to get. I've done a little looking around and to me it seems like logitech is the way to go. The problem is that they have multiple types of surround sound speakers. The three that I like are the z-5500, G51, and the X-540. Anyone have any suggestions or comments on these? Please feel free to give me some other options.