Hi! I did the post-bac at MICA a few years ago (was also choosing between Brandeis and MICA)- and I don't regret my decision one bit. I had visited both schools and just felt like MICA had more to offer in terms of resources, studio space, faculty, etc. than Brandeis. Bill Schmidt (who heads the program) and Linda Bills (the artist in residence) were amazing mentors, - I'm still in touch with both of them. There are also opportunities to work with lots of different faculty, depending on your interests. My work changed dramatically over the course of the year (I went in an oil painter and came out a sculptor...), and it was a truly wonderful experience.
Anyway I could go on and on and on - but feel free to PM me if you want more info/ have any more specific questions : )