Marantz AV-560 users, past/present How is this preamp? How about compared to the av-9000?? I know it is outdated but it does have DD 5.1 and dts right? I am currently using a SR-19 A/V Receiver as my preamp and may be able to get the 560 for $350 plus shipping. Is it worth it? I love the sound from my SR-19 preamped. But, I also love my SR-19 with its internal amps and want to pull it out for a second system. I hope someone can jump in to vouch for it because I do not have a lot of time to decide. I am leaning towards taking it to hold me over for a while.