IMHO law of diminishing returns kick in much quicker when it comes to cd players, the difference between a $500 cd player and a $5000 cd player is not very big, unlike speakers or turntables. I personally don't see any merit in purchasing a cd player costing more than $2000.
I have carefully heard the Pioneer PD-91, Marantz CD94, Sony CDP-X55ES, Denon DCD-S10 and some others costing between $1000-2000 and I think they sounded as goodif not better than the several $,$$$ Wadia.
By the way, this is one of the so many good threads on A'Gon. Very beneficial to some, at least I found it so.