Completed the Oxford MSt, but it's my only one so I can't compare it to the others through personal experience
The structure worked well for me - blocks of intense study sessions and tutorials, and then longer blocks of working independently - but naturally that will depend on your own circumstances.
There is an emphasis on challenging yourself to try writing outside your natural genre, which is healthy and can be exciting. This is balanced with extensive opportunities to build skills in your preferred genre. Tutorials and seminars tend to be led by extremely high quality writers/tutors. Do you have specific questions? Happy to try and answer!