I just checked it real quick, and it looks like their SB jitter measurements were about the same as those of some old RME cards, somewhere in the low 200ps range. Looks to be about a wash as far as Stereophile measurements go. Not really sure how good of a gauge those are, but JA also mentioned the Transit being pretty high and the 0404 being even higher, both in the single digit ns range I think. That seems to confirm what others tell me as far as transport quality. So there's definitely a correlation, if not necessarily a causation thing going on.