new cd player or old


Hi-I am trying to upgrade the sound of my cd source from a horrible old toshiba dvd player-I have about $300-500 to spend. What gives better sound-a quality used cd player from 10 years ago, or a new NAD player? Thanks.
tbromgard
HI-Thakns for the suggestions. I purchased an NAD and I am really surprised how much better it sounds than my old unit-right out of the box. Recommended for anyone thinking of an inexpensive cd player.
Also am having same confustion to buy new cd player
becoz recently I have sold my MARK LEVINSON cd player and go for new one. In my mind one of from these players for to keep long. My other compnents are Pass XA30.5/Pass pre/Dynaduio speakers/Siltech cables. Anyone suggest me for good player on experience which will help me lot.

A) The new player from Sony........XD5400SE (CD/SACD)
B) NAD Master series...............M5 (CD/SACD)
C) YAMAHA..........................CD2000 (CD/SACD)
D) BRYSTON ........................BCD-01 (ONLY CD)
E) CAMBRIDGE Audio.................840C (ONLY CD)
OR
My second systems source of marantz with your new DAC
(Benchmark/Belcanto3/Cambridge).

Thanks.
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go for the sony 595 as a refurb from sonystyle for about $60. if you don't like it they will come and get it. check it out as it is one of the best units available often beating $2K units.
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What gives better sound-a quality used cd player from 10 years ago, or a new NAD player?

Why does it have to be as far back as 10 years ?

There are some respectable cd players that are in your price range ( Jolida JD 100 is one example ) and isnt 10 years old.