Dedicated CD player or multi-plr for 90 music ?

i was wondering since my system (about $10K retail inc. room treatement) is used for %90 music listening. should i upgrade my player to a dedicated CD player or go with a multiplayer and sell my present NAD-T534.?

budget is about $800 USD new or used of course.
do tubes in players make a difference?

any suggestions for the best player in this price range?