Pros
I worked for Nurturing Wisdom for a year, and I only left because I moved away.
This company is fantastic. What first struck me was that everyone in NW has been a tutor themselves at some point. I've worked for schools and companies before in which this was not the case, and it was certainly frustrating then to have bosses who didn't understand what it's like to teach, or even what teaching requires logistically.
At NW, we were all on the same page. My supervisors knew what they were talking about and helped me improve as a tutor. They put the students first, since we want to teach ourselves out of a job, but they actually care about the tutors as well! That's rather unusual, in my experience. Tutoring with NW did not feel like a profit-focused endeavor but a process in which every party was treated as a human.
Getting matched with students and preparing materials could not have been more convenient. There is a slight learning curve for some of NW's strategies, but once you get the hang of them they become intuitive.
Cons
Naturally, some families and students can be difficult, but this is a part of teaching. NW always works with you to alleviate such situations.