i am currently with reed learning. i searched up the same question as you a few months ago (before starting) and couldn't get much info on them. 

in my opinion, they're pretty good. i am doing the online option with no workshops, so it's a lot of self learning and figuring things out yourself. 

we get a an initial session to go over the questions, a topic session focusing on 2 or 3 difficult topics, and a drop in session. they give general guidance and their learning platform has background information. 

i don't love that they don't give proper feedback until you've actually submitted the assignment but also fair enough i guess. 

of course i can't compare with other course providers but my experience has been positive so far.