i have A+ 2.2.5 and just bought JRiver 21 for mac....
there is a difference in sound for sure.... Who's best ??
i bought JRiver because A+ always skip or cannot connect correctly with my DAC....
don't know why, because others with same DAC are successful...
I am Upsampling 44 files to 352 or 384 for 48...
Usually plays fine in A+ but the software is never constant for starting song.... "hiccups" then it finds the right and plays well.
With JRiver, i can set my DAC to buffer max and DSD streaming, outputing at 2 times DSD in DoP format with no lattency or "hiccups", love it.
i won't comment on Remote or library settings, because it is obvious
i'm still testing... at first, JRiver seems more clearer...
A+ plays seems more rich in middle frequency range... not an expert and not tested fully yet, just first impression