As both the colleges are reputed one , so you can go with any of. If you want a preety good college life then you can choose DU as the fest of Miranda is very popular between south or north campus of DU. Miranda has only girls and it is in north campus of DU.

Whereas Fergusson college Pune is a co-ed one and it is a very reputed college of Pune it offers various courses in the streams of arts and science in the city of Pune, India. It was founded in 1885 . And it is one of amongst the most oldest college of Pune .

Hope this info helps you. Thank you!