Playstation High Component Cables

[PlayerOfNintendo]

Hi there, I just became a member so I could ask this question. Ok right now I have my PlaystationThree hooked up to my T.V. using high component cables, I have the Red,Blue, and Green ones in the back of my T.V. And then I stretch the Red, and White ones(Audio) and plug them into an older HomeTheaterSystem(No HDMI Hook-up) so I can enjoy surround sound. Now my question is. Should I buy a newer HomeTheaterSystem with a HDMI hook-up, Plus two HDMI cables??? Or do High Component Cables display the same picture??? Ok hopefully everybody understood that. Basically the question is. Should I buy two HDMI cables and a newer HomeTheatersystem? Or stick with the high component cables? I want the best picture possible. But just a slight difference I'm cool with. Thanks in advanced. Please help me.