I am currently thisclose to buying a Pioneer Elite PRO-630HD tomorrow. Currently I have an older model Pioneer 3-disc DVD player that does not have progressive scan. Will I be killing myself if I don't pick up a progressive scan dvd player with my tv tomorrow? If so, does anyone have some recommendations (Elite vs. Denon or Marantz)? Are the Elite dvd players worth the money (DV-45A and DV-47Ai)? And as someone who can see/hear/appreciate the differences in quality of picture and sound, but does not completely "get" the technical aspects, could someone explain the differences? Thanks a lot for your time.