I have one, very similar time to you. Just under a week, with about 70hours play on it.
I have come from a Chord qutest with a separate power supply. The power supply moved it up a level. I was looking for something less harsh, I have a set of ZU speakers and they can punish some recordings. The CEN.GRAND has already really helped that issue. Soundstage has improved, instruments sound better.
previous experience, from memory, not current side by side comparisons, include Bluesound node, marantz model 40 built in dac, and lyngdorf 3400 used as dac and streamer. The CEN.GRAND sounds nicer than these.
I am going to keep this one. The build quality also feels great.