When comparing MDM vs Entrance, the Slant community recommends Entrance for most people. In the question“What is the best Linux Display Manager?” Entrance is ranked 10th while MDM is ranked 13th. The most important reason people chose Entrance is:
So it can be used on other unix-like operating systems besides linux without the need for linux bindings.
Ranked in these QuestionsQuestion Ranking
Pros
Pro Easily user-configurable
Pro Many available themes
Hundreds of themes.
Pro Excellent documentation, easy-to-find/understand
Pro Mature software
Pro Does not need Systemd
So it can be used on other unix-like operating systems besides linux without the need for linux bindings.
Pro A Sandbox
Entrance is probably the most configurable and themeable display manager available.
Cons
Con Might not work well with distributions that are based on more recent packages
This is a display manager forked from GDM2 by the Linux Mint developers. So the display manager is developed alongside Linux Mint, and since Linux Mint is based on the latest Ubuntu LTS it might not work well with distributions that are based on more recent packages.
Con Depends on GTK and its dependencies
Con Edje is hard to master
EDJE *.edc files are CSS-Like code that is hard to master:
https://www.enlightenment.org/_legacy_embed/edcref.html