Nice right up. But the comparison to the 17 I do not agree with. The 17 is very powerful but the top end is more artificial and is not as natural. People listen to too much digital music and not enough naturally produced sounds. The DX320 is more musical, natural. The 17 is extended only because of the digital edge it has not the musical edge. Everything can be emphasized, that doesn't mean better or natural or for that matter, normal when it comes to "real" 'music. Many people have become accustomed to just the digital sound and expect that when a true reference is real music/voice in a setting where sounds are not digitized and abnormalized (my own word). Listen to birds, footsteps, a stringed instrument, voice, singing voice etc. You don't hear an unnatural high frequency or in any of the frequencies, you hear real sound. We try to trick our mind by overemphasizing, exaggerating but we often don't take the time to validate with real sound.
So in that context, I do not agree the 17 is better in the areas of sound you mention and If I want a different sound, to a degree, like changing venues or rooms where something is happening, I change the amp modules of the DX320.