Excellent comparison ma_t14.
Thanks for continuously updating the topic. I was using MediaMonkey quite long time ago, but it was really slow, heavy-weight and the GUI was cluttered for me.
Looking at your comparison I can see room for MusicBee to get improved, but in fact MediaMonkey is far behind our Bee when it comes to ease of use, design and productivity.
The one and only feature I REALLY would like to see in MB, is a small button to switch between player view in the right top corner next to 'Minimize' button. It should be added to Mini and Compact Player as well for better consistency and ease of use.
I'm sure it would be much more intuitive and practical solution, I know that the similar feature already works with MB with 'Maximize' button for Compact Player and 'Show main window' button for Mini Player but I guess a separate button (identical for all views) would be much appreciated.
I like the way Album and Tracks view is organized in MediaMonkey too (you can see more Albums because less free space is wasted IMHO).