All of these players have versions that sound different. The best thing is to get advice from someone who has tried them all. I selected Amarra and I use an older version which can be loaded here:
http://www.audiocircle.com/index.php?topic=105236.0
Once you have Amarra, just go to the "extras" folder, do a "clear preferences" and then install version 4318.
Full Amarra has the huge advantage of not only sounding superior, it has an EQ built-in that is the best on the planet. Totally transparent. I use it at home at at shows. Its like replacing your $10K speakers with $100K speakers. EQ is mostly useful for the speaker and somewhat for room bass resonances. Here are instructions on how to use EQ:
http://www.empiricalaudio.com/computer-audio/recommended-systems
Steve N.
Empirical Audio