In order to choose the best option for you, I reckon people should pick a topic that they reckon they'll find challenging. Like gyros, for instance (my bugbear!!!).
Take your shortlist of schools (based on price, reputation or whatever) and ask them all to send copies of their notes on that particular subject. Go with the one whose notes you find clearest.
IMHO feedback is much of a muchness: all schools seem to have pretty decent feedback, and doubtless you will encounter someone from another school somewhere along the way who will lend you their feedback.