I had a XS3 + ND5XS2 which was punchy energetic and fast paced. I recently got a SN3 and I am not overly impressed with it to be honest.
The treble is much clearer and sparkly-er, there is a bigger soundstage and individual instruments are easier to hear separately as if there is more space around each instrument.
However, the XS3 sounded more as a whole musical piece and much more fun/punchy and energetic. With the SN3 it sounds like the music has taken a step back and has lot some drive and energy. Bass seems to punch less hard (or less obvious) as on the XS3 as well.
I have it playing full time for over a month now, 24 hours a day.
Is this just the character of the SN3 and is this considered as more insight / resolution but at the cost of fun and energy?
I seem to smile and tap along more with the XS3 than with the SN3 somehow. I love the speed and drive it gives to my music.