Actually the 320 kbps makes some songs much better to listen to. For example let's say when I'm listening to a rock song I don't really feel the difference between 192 and 320 kbps, but when I listen to drum and bass/dubstep/ambient/psytrance it makes a huge difference, so yeah.
Also I can't really help you since I'm listening to music on my mobile phone, so good luck with satisfying your needs!