I’ve used plain old Debian since ~2016 and only just tried LMDE this month, it’s really nice! I prefer Gnome but the default LMDE desktop was perfectly usable and clear, and I really like that it walks the user through setting up automatic backups. I would definitely recommend it over Ubuntu now for new users.
For whatever reason, when i tried to fresh install lmde 6 two weeks ago, it absolutely refused to set up grub properly for me. Something in the installation just refused to work, despite reformatting and setting up partitions in both the automatic and manual configurations. Hopefully other new users have a smoother time than i did?