I disagree. Smaller O.R.'s often do not have first assistants, which means if you scrub, you will often have to first assist and scrub at the same time which is very difficult for a new nurse.
Surgeries usually take longer in teaching hospitals, which is less hectic for new nurses.
Like it or not, large teaching hospitals are the best place for new nurses. You have the most resources there.
I've been in both, and some smaller ORs do have first assistants. Where I work at, they are in *every* surgical area from the main OR, ambulatory surgery, to the endovascular lab, and even some of the L&D OR suites.
The nurses in smaller OR's make excellent resources. So as a nurse in a smaller OR, you won't always be without resources. And even in large teaching hospitals, your resources go home after 4:00pm.