I've not had the chance to hear the Luxman, but I'm a dealer for Marantz. The RUBY really is a nice sounding player, and well built. And as mentioned above by KREN, the new Marantz SACD30n could be a option for you that would wrap cd/sacd playback along with a streamer in one box. I've been impressed with the SACD30 so far.
Luxman D-03x or Marantz KI Ruby
Looking to replace my older wounded Esoteric cd player with something new(er). I've read quite a bit on both the Luxman D-03x and the Marantz KI Ruby. I live in a small town hundreds of miles from any substantial dealer of either product and was curious whether others have had a chance to compare these two in person and why they chose one over the other. Or, if they were able to audition these two but ultimately chose another player instead of either of these