FWIW in the last ten years I've owned the following CD players
Rotel RCD-1072 (modified)
Arcam FMJ CD33
Cary Audio CDP-1
For some reason I was trying to decide whether the high end CD players were worth the price or not. For instance, I compared the Rotel and the H-K and the Rotel sounded better to my ears. Then I noticed the Rotel had a higher output voltage than the H-K (2.0V vs 1.2V)
So I made some more comparisons in sighted mode and level matched, and guess what... The apparent differences dissapeared!
In short. In most cases the differences are related to different output levels.
Now I have kept the Marantz in my main system due to its SACD reproduction features and the Onkyo is serving at my office. Nice player indeed and very cheap!