NAD M25 vs Bryston 4BSST/6BSST

Any body compared NAD M25 and Bryston 4BSST/6BSST' sonic difference in two channel music (multi-channel movies) and care to share their experience?
No, but power output differences aside, I'd suspect the NAD sounds warmer and the Bryston to sound crisper and tighter with more detail in general from what I have read and heard.