What’s the 3rd choice - your title. You put in Carleton and Midd.
I would argue Midd is better known than Carleton but I would also say, who cares.
You have two schools with concerns for you that I would not factor in (that’s me) because the schools will address them (overenrollment, for example) over time.
Which school do you feel most comfortable?
Look at the positives, not the negatives. Assuming they’re both affordable, choose that one. This includes calendar, vibe, etc.
Good luck.