I've been lurking on this thread as well as the 3 manufacturers' websites for a while, as I might get back into stats at some point.
Looking at cavalli's website this morning to read more on the LL2, I noticed that he's had it independently tested, and, from what I can see, there are some impressive figures.
We have asked Avenson Audio to do THD+N measurements on the LL2. Here are the results.
See table in lower left for math (measurements are RMS).