It’s easy to answer the question of worst job…
I worked at a small private hospital that did mostly orthopaedic, and cosmetic procedures, and lots of little day case procedures as well. It was hands down the most toxic work environment I’d ever experienced ever by a solid long shot. People were insanely nasty to each other and would do quite frankly nasty and sometimes highly unethical and dangerous stuff to each other to try set each other up for failure.
I literally changed my practice in the circumstances because I felt uncomfortable leaving my fluids unsupervised in a warming cupboard because I was genuinely concerned someone might maliciously spike my bags with something that could harm a patient. Even years after leaving I never open or run through fluids until the moment I’m about to connect them to a patient, when I can make sure there’s been no tampering. I did not work at that hospital for long. Even though the pay was great, I had more suicidal thoughts whilst working in that hospital than I’d ever had before.
The best place is harder to define. I work in hospitals and there’s always a lot of really annoying workplace politics that detract from the actual cool fun aspects of my job in every hospital. They’re all basically a little bit shit. However, I’d say one hospital in particular just had really excellently planned shifts and respected people’s right to go home at the end of the day. Even though it was less exciting than some other places, I just never felt under appreciated, and because my shifts gave me enough time to complete all my tasks I always felt like I had enough time to do stuff without rushing around like a headless chicken.