I will say that the low gain sides of the Crazy Horse and Frazz are quite different from each other, I think the Frazz does less gain 'better' than the Crazy Horse, there's more room in the knobs to find several very useable tones; whereas when the Crazy Horse has the Fuzz rolled back (drive is pretty average by itself, the pedal is definitely about how the drive interacts with the fuzz), it just has one sound.
Interestingly if I wanted to do low gain with the CH, I'd have the fuzz around noon (or more) and experiment with really dialing back the sag knob, and rolling the pedal's volume back. You get this very useable splattery cheeky little tone that still works well for chords. The CH definitely doesn't seem to like having the guitar's volume rolled back, nor did it like my experiment of trying it with a battery.. It wants to be FED!
Re the Frazz, I find the mix knob and the gain switch definitely make it a very different unit to the CH, I actually like having the sizzle fairly high, mix higher than most would have it, and playing jangly chords that mix very pleasantly with the fuzz. I didn't think I would use the gated high gain side as much, but actually the gate doesn't seem as 'strong' as on other pedals, really it just feels like the pedal has more 'oomph' on that side, more for big riffs and power chords than the open chords I use on the lower gain side. Again you can get away with having quite a bit of mix knob in the tone, it gives some extra bass that makes Tool-style riffs really percussive and visceral.
That's enough ramling from me, back to sleep I go
