I've been reworking my way through this set recently. This set and The Billie Columbias and a few others. I find the best way for me is to burn a copy and keep it in the car and just go through the sets disc by disc, but not all of one set at one time. Mix it up.
I dig Mildred Bailey. Her voice may at first seem Betty Boopish but really her pitch, her range and her time are excellent. The accompaniments are excellent and, as pointed out by Lon, the sound on this set is phenomenol.