Mint has been the Linux on my desktop for years. Linux Mint traditionally has been built on top of the core Ubuntu Linux and Ubuntu is based on Debian Linux . Ubuntu makes quite a lot of changes to Debian. Mint tweaks and improves on Ubuntu. If you are ready to make a move to Linux, Mint is a great choice.
I have been using LDME Mint as my primary desktop for over 6 months. I think it is just about the Best. Mint describes LMDE as
“Its goal is to ensure Linux Mint would be able to continue to deliver the same user experience, and how much work would be involved, if Ubuntu was ever to disappear. LMDE is also one of our development targets, to guarantee the software we develop is compatible outside of Ubuntu”.
LMDE aims to be as similar as possible to standard Linux Mint, but without using the intermediate Ubuntu code and processes. It is based on Debian instead” I have been using Mint LDME 4 as my primary desktop for a number of months now. I do not see why Mint doesn’t ditch Ubuntu and make this their primary Mint distribution. I hope that is their plan.
LDME is based directly on Debian Buster. While Debian is great in and of itself. It has some quirks. Debian is committed to what it calls ‘The Debian Free Software Guidelines (DFSG)’. https://www.debian.org/social_contract#guidelines The short is that they use only free and open source software in their builds. Unfortunately some commercial products (such as printers and wifi ‘cards’) do not want to release information about their products to allow developing free software (drivers) for their products. The Debian approach is to give a list of supported hardware.
Ubuntu and Mint are less fundamentalist about using only open source software and so support and allow closed source drivers. This makes it much more likely that Mint will work well with your existing hardware.
For more information, there is a good review of LDME on Linux Insider.