kaotician:I'm also paying for a largely unwanted extra dvd drive, to add to my hd-dvd player, my ex75 dvd/hdd player, my pc, my xbox, my dv575. I read that the lx50 has a great dvd upscaler, so perhaps it would supplant my ep-10 as first choice......In any case, I certainly want to reduce my mass of cabling, and also from an aesthetic viewpoint prefer the idea of an all-digital interconnection from the sacd to the amp, than my current Qunex 3 multichannel setup.
This was exactly the same dilemma I had...in view of a) long wait for DVD-A and SACD compatibility with BD players and b) the expected high initial price that these players will command, I finally decided to invest in the LX50. Can't comment on performance of your HD player, but the LX50 is indeed a great upscaler wnd would be an ideal replacement for your DV575. My LX50 is connected via HDMI to a Yamaha 763 and speakers are Wharfedale Diamond 9.0...you have a similar system and I reckon you would be delighted with the sound! Your only other option is to buy a seaparate SACD player...