[mreome]

They still make (mercury free) versions of these. The Heat/Cool version is CT87N1001 and the Heat-Only version is CT87K1004.

The last apartment I lived in installed new "smart" thermostats throughout the building. It always seemed to change the target temperature at random and I got so frustrated that I swapped it out with a dumb Honeywell one (and swapped it back when I moved out). I never found having to make the occasional manual adjustment to be an issue.