The point of diminishing returns is about $19.95. That would get you the cheapest portable or close-out throw away CD/DVP player from a big box store.
Past that, it is a matter of value, which is subjective. Some folks would possibly consider a good mid-tier player, like the Rotel 1072 or Rega Apollo to be about 50% or maybe 75% of the sound of the top-tier. Some folks might find it to be 95%. Some folks could possibly even prefer the less expensive player.
It is going to depend on your preferences, quality of recording you own, and the ability of your system to be tranparent enough to hear the difference in various different players.
It is also going to depend on the depth of your wallet! Personally, I do think that spending significant extra dollars on a player that I feel is superior is money well spent. Currently I own three players, an inexpensive Sony CD/DVD/SACD player, a Quad 99 CDP-2 and a Resolution Audio Opus 21. Each is a great value, but I have the resources to own the more expensive Opus 21 and I think it is a good value. Subjectively, I think it gives me about 95% of the sound quality of a cost-no-object player. Although I could afford a more expensive player, the Opus 21's price is the spot where I'm comfortable with the return on my sound expenditure. Also, I'm frugal and refuse to spend big bucks on an adequate pre-amp. I run the Opus 21 (or the Quad) direct to my power amps. This makes them an even better value to me.
Enjoy,
TIC
Past that, it is a matter of value, which is subjective. Some folks would possibly consider a good mid-tier player, like the Rotel 1072 or Rega Apollo to be about 50% or maybe 75% of the sound of the top-tier. Some folks might find it to be 95%. Some folks could possibly even prefer the less expensive player.
It is going to depend on your preferences, quality of recording you own, and the ability of your system to be tranparent enough to hear the difference in various different players.
It is also going to depend on the depth of your wallet! Personally, I do think that spending significant extra dollars on a player that I feel is superior is money well spent. Currently I own three players, an inexpensive Sony CD/DVD/SACD player, a Quad 99 CDP-2 and a Resolution Audio Opus 21. Each is a great value, but I have the resources to own the more expensive Opus 21 and I think it is a good value. Subjectively, I think it gives me about 95% of the sound quality of a cost-no-object player. Although I could afford a more expensive player, the Opus 21's price is the spot where I'm comfortable with the return on my sound expenditure. Also, I'm frugal and refuse to spend big bucks on an adequate pre-amp. I run the Opus 21 (or the Quad) direct to my power amps. This makes them an even better value to me.
Enjoy,
TIC