The other was very highly recommended by the professor I spoke with about this, though I haven't talked to her about fees yet, or how she works. I should be meeting them both, face to face, by the end of this week, and will make a decision on the matter then.
The price involved in this is prohibitive. We're talking in the thousands of dollars. But, it is something that needs to be done, as this manuscript needs a pile of work, and I hate editing myself. Getting an outside eye, one without bias, should only make it better.