[please excuse my poor English]
Given you requirements:
1. nearfield
2. relaxed sound
=> Harbeth P3esr (or P3esr XD, but slightly more defined)
+ subwoofer, if necessary (later)
+ Antimode 8033 DSP correction for the subwoofer only (approx. €350)
WHY?
- because P3esr are closed speakers (no reflex-ported), they are insensitive to the room acoustics. I heard 2 pairs in the same house, but in 2 very different rooms; I was struck how similar to each other they sounded.
- because they fit the bill, depth wise.
- because they sound positively terrific, especially near-field, and with acoustic music (but also other genres).