Looking for SACD player............

If you are pleased with your Marantz, then the natural choice would be another Marantz.

I am more than pleased with my recently acquired Yamaha CD-S1000 to mate up with my A-S1000 integrated.

Bill

I like the Sony SA-5400 ES SACD player a bit better than my Marantz SA-8001.  It seems to have a bit better detailed resolution and clarity.  The Marantz has a more rich, tube-like sound at the expense of a bit of detail and clarity.  

The reviews of the SA-5400 were outstanding - Google them.  You would be very pleased with the improvement in sound - unless, you like / prefer the warm sound of the Marantz equipment.  

If it were me... I'd get a NOS / lightly used Sony SA-5400 ES and an extra laser sled / laser assembly for it - off eBay / Amazon.   I would not get it without the backup laser sled / laser assembly - which is the most likely part to need replacement after a bit of use.  Sony does not support their products after about 7 years - so, be fore-warned.  

Marantz players tend to roll off the top end.
Denon is coming out with a new SACD player.  I'd wait for that

Oppo for me

@tpreaves - do you have many SACD discs?