CD transports

Jay’s seems like a real good option.  But, you could also try a reclocker on ur Luxman and get good improvements for less.  Empirical Audio and Wyred4Sound offer good ones.  You have a great DAC so not sure how much a reclocker would help, but just another option to explore FWIW.  Best of luck.  

I use a Cambridge CXC transport with my DAC, and it  sounds just  fine. As already mentioned,  your existing Luxman CD player is a fine piece, so it might be better  to do nothing. 

Yes there is another issue: space.  The Luxman is huge and my space is shrinking shortly.  You know the downsizing thing we all go through.  Probably going to move to smaller quarters in the near future.

Top-loading vs. tray-loading can have more of an impact on space issues than the size of the unit.

The Cyrus gets great reviews, but there seem to be a lot of complaints about quality and breakdowns