Mako's class was all right. She has written a few books of her own and has some impressive credentials. You'll get more useful critiques out of other students than from her, though. I found it kind of hard to follow her train of thought and a lot of what she said was not too clear.
I also though she led the class very slowly and sometimes did not give people their fair share of workshop time. Maybe it was just me, but I thought that the pieces she liked got loads of time, and those she didn't got much less. In a class based on workshopping, that is a big, big downside. Fortunately, you actually get to do a lot of writing! Lots of creative assignments, loosely guided so that you can really do your own thing. So yes, this class was worth it.