I'm planning on either buying a seprate amp or a DVD-A player, but I cannot decide which, and the budget won't allow both. My current receiver is an Onkyo 797 and I am running it with A/D/S tower speakers up front(4ohm) and Definitive Procenter and Procinema surrounds with a Velodyne CT-120 sub. I'm thinking of spending $300 on a DVD-A player such as the Toshiba 4700/4800/5700 or Panasonic RP-82 or DVD-CP72. If I go the amp route, I woudl spend about $500-600, either a Parasound HCA-855A or Rotel RMB1070. The Onkyo is very stong in surround, so I'm probably looking for a stereo amp. So where is there more improvement in sound? I've heard that the difference between DVD-A and CD is like night and day, but everyone says seprate amplification is the way to go, which did you find made a bigger difference?