I got tired of the advertisements for paid Ubuntu security updates in the terminal. That’s honestly the main thing. Overall, I like the idea of Mint being based on original Debian, rather than a derivitave of a derivative. I haven’t noticed any differences from the ‘normal’ Mint, other than what I mentioned about the terminal. I don’t think there’s any reason not to install the Debian edition, but the experience will be 99.9% the same either way.