I have direct experience of both preamps paired with 60.8s. Unsurprisingly, the 32 is better than the 22. It's more refined tonally, and more organic sounding. But at this level, the differences are relatively finely graded, not night and day. The 32 is better, but both are excellent.
One thing that can throw people with these preamps is that they are designed to use the full range of the volume control which operates in fine increments. So unless they are played at a setting on the numerical display that seems to be "loud" (visually, but actually isn't sonically) then they can seem a bit underwhelming.