I have one friend who edits everything I write paragraph by paragraph as I write it.  She's a high school English teacher, and she's awesome.  (someday, when I can afford to, I'm actually going to pay her)
I also have a select group of other friends that I spring large chunks of completed work on, to get a fresh pair of eyes.  My problem there is that no one reads as fast as I need them to (I have zero patience when waiting for reviews), and when they do, they want to take their sweet time giving me their thoughts on it.  All I truly want is a first look, gut reaction on whether or not this story interests them, and if they would keep reading it if they picked up a book that began that way.  Unfortunately, they seem to be overthinking things.  *le sigh*