I haven't owned a Bryston amp in a long time (for the record, a 4B, c.1990), but I do own a McCormack DNA-HT5, modeled after the DNA-125, and I'm very happy with it. Lots of detail, very quick sound. Not at all warm and fuzzy, if that's your thing.
The one thing you may or may not already know about the McCormack amps: they're all designed with really hot inputs, so that they work a lot better (in my opinion) with passive preamplification, rather than active.
The Bryston I had was stupidly paired with a preamp that had no business in the same rack and, as such, my own experience with the amp was inconclusive. Still, one of my fondest memories as a late-adolescent was going to my local shop and listening to a little Bryston 2B rock the friggin' house down.