You need to list your current system and your taste in music for any meaningful suggestions, but I am going to stick my neck out and say any Marantz within your budget should be fine.
My advice would be to shortlist a few, and try and hear them in your system if possible before making a decision.
Sorry, I just saw your system mentioned. Since you already have a Marantz integrated my Marantz suggestion just might work. I had the same Thorens deck with an AT arm and a Nagaoka cartridge a long, long time ago. Nice system
I am open to any CDP brand but dont intend to invest too much. Basically looking to play my CD collection on the player instead of ripping and playing through SB!