I bought the canvas API but my husband who is a computer programmer couldn't install it as it needed coding etc. in programmes he wasn't familiar with. So, I changed it to moodle, which is very easy to install for a non-techie person.
I opted for LMS because my students get confused with links, classes and the wiziq platform - and i can't round them up - the LMS will give me full control and make it easy to post assigments etc. without multiple emails.
moodle needs a server so I have a hosting company doing that for a small fee.
Canvas is 'on the cloud' - no need for a server. I don't know if canvas would charge you for 60 students but freelance teachers are free on canvas - it was the wiziq integration that made it complicated for me.