I'd really wait to hear the Q Acoustics and the Monitor Audios - they are pretty much on the bright side (at least the new range, the 3000, imo). The Silver range from MA ist the one without bright sound, bronze and gold are bright-ish. The CXN itself is pretty full-bodied, so do audition, because you don't want everything in your system to be warm/soft, because you'll end up with very boring sounding stuff.
I agree, the CXN is really, really good.
I would pair it with Exposure 3010 / Naim 5si (even second hand) and Focal Aria 906 (these are very balanced speakers, and very easy to drive, with smooth treble - if I were to chose where to spend more money - amp or speakers - I would try to get these, and match the amp accordingly). Arcam sounds more full-bodied then the Naim or Exposure. Nad can have a bass that sounds too fat and slow if partnered wrong, that's why it's very important to audition for yourself.