My experience at MMU has been generally fantastic. I studied English and Film at Undergrad level and am currently studying an MA in English.
One of the most notable things about MMU is its atmosphere and attitude; meaning that compared to UoM and other Russell Group Universities, it seems much less exclusive and/or elitist, and much more down to earth.
From my experience with the English and Film course, the course content is very accessible and engaging, containing some subjects that I am very familiar and comfortable with, and others that were new to me but extremely interesting.
What makes this experience however is the wonderful teachers and tutors of the English department, some of the most passionate and personable intellectuals I have ever got to meet, some of whom I maintain friendly relations with.
I cannot speak for the experience of other subjects e.g STEM and computer science, as I have heard completely contrary things from my friends studying those courses. That being said, in my time at MMU, I have gained so much knowledge and have drastically improved myself as an academic and as a worldly human being.