Best CDP under $500?..... Used market

It has come to my attention from a fellow audiogoner that my cdp may be outdated/inferior to the newer technology out there. It is a Pioneer Elite Pd-65, and was highly recommended by a friend in the audio business for 30 years.

I am wanting to pickup a few for comparison under the $500 price point, and would like some opinions. I listen to a wide variety of music.

Here is my system:
Forte 1A Amp
NAD 1600 Pre
PSB Gold i's
Kimber 8tc, Silver streak, PBJ

Thanks in advance