I have a few friends from KJ Somaiya College of Arts and Commerce, so I can give you some insight into their BMS course.
KJ Somiya is not a good option if you really want to pursue BMS for knowledge and not just for the sake of a degree. The teaching experience for BMS at KJ Somiya will not be satisfactory.
If you prefer knowledge over a degree, then you should go to some other better colleges such as MCC in Mulund. But, if you just want a degree in BMS then you can opt for KJ Somaiya. KJ Somaiya has a huge campus. This is advantageous if you want to bunk lectures and have fun sometimes.
For pursuing a BAF degree, K.P.B Hinduja College will be better. Most of the afculties are helpful and cooperative. It also organizes many industrial visits. You will get the required exposure.
Wilson College on the other hand doesn’t offer a BAF degree. It is well known for its BMS degree.