I want the best picture quality on my toshiba 46 inch dlp but I'm very confused. Hdmi will take care of the picture, but with the optical from the logitech speakers interfere? Hmdi is supposed to carry both but not actually. It doesn't mater because I don't have a real receiver. I didn't choose to spend big money on a real receiver just using Logitech DTS, THX speakers with optical jack. Am I just better using component and forget the idea of trying to use toslink with the better image cable? Thanks for your help.