Before I bought my DNA-225 some time back I auditioned a DNA-125 and the Belles. In short, very short, I'd pick the McCormack. Zaikes description of the 125 is pretty much the same as mine, absent the slightly rolled-off treble which I did not notice (but then it was auditioning for me and not long term listening).
I ultimately bought the DNA-225 and subsequently had Steve and Co. do their Platinum Upgrade Magic. The results were nothing short of astounding (see my review for details of my experience). I have heard many, many amps in my day (and it's getting to be a rather long day these days!) and the only other amp I'd even really consider at present is another DNA-225 so that I might have Steve McCormack turn it and mine into a pair of monoblocks.