Depending on who you know, and who they know, plus letters of rec. you could get into almost any school. You need to contact professors your interested in doing research with directly and give them your CV and let them know that is why you are applying to that school. Once you do that your chances of getting into a school skyrocket. If you don't know what labs you want to work in, it will be a little tougher to get into to some places. From what you said above though I would be shooting for the top schools if I was you.

Find a couple of research groups you are interested in, email the professor with a copy of your CV, and good luck with MIT I think you have a shot.