Quick update: This isn't based scientific a/b testing, but purely on listening to the music - and I'm going to increase my score related to the imaging from my previous 10-15% to 25-30%, but with a slight concern that it doesn't appear quite as warm sounding as it did.

While I am aware this is very subjective, it does seem that it is improving the imaging substantially. I'm not sure whether the reduction in warmth is my imagination, but I seem to recall reading that Bob Stuart has said that increased jitter can lead to music sounding warmer (and, one presumes, v.v.).

Prolific music listener / Hi-Fi addict!