I have the Sony 53hs10 (has component video). Do all RPTV systems with component video support 480p? I am assuming that the 480p is the format for progressive scan is that correct? I was concidering a multiple disk DVD player since I need a new CD player and would also like to get a new DVD player. Seemed like this may be a good way to go or would this be a mistake in that I will compromise performance in some way?