Remember the relation between power and sound level is logarithmic, not arithmetic. So increasing from 125 to 200 watts represents a sound level capability increase of just over 2 decibels - which is a bit less than the smallest loudness increase that can be easily noticed in normal environments. More to the point, though harder to find out, is how clean an amp is at the bottom of its power output range, not the top. I've often heard that the first watt is the most important - this is obviously true for high-sensitivity speakers like Lowthers (1 watt in = 95+ db out), but it doesn't stop being true for more typical speakers. The most important spec here may be odd-order harmonic distortion, which our ear doesn't like since the false harmonics aren't octave multiples of the original note. Less odd-order harmonic distortion is probably the reason tube amplifiers had a reputation for more "euphonious" sound than transistor amps, at least until the latter got very good. "More euphonious" doesn't necessarily mean higher in absolute accuracy, just that the reproduction errors are less unpleasant-sounding.
So the point of all this is, how do the various Outlaw amps, or any others someone's interested in, do in terms of odd-order harmonic distortion below one watt output? Who can answer this??