Lange Saxonia Automatic vs Lange 1815 Up/Down

[milgaussSD43]

For those who have owned one/both, which one would you choose? Please don't suggest "buy what you like" or "depends, one is automatic, one is MW" or "depends on what's in your collection." Respectfully, I understand those details.

More looking for folks with real experience with these pieces and "regrets." "I thought I wanted X but really later on wish I had Y." That kind of feedback.