I called the New York City-based rental house Dreamhire today and asked if he would match the rates of a rental house on the West Coast. He actually laughed at me. Problem is that Dreamhire's daily rate for a Cedar DNS 1000 is $185, while it's only $80/day at Audio Rents in California.
The two words I have to say are "meh" and "feh".
There are a buncha audio post facilities in New York. Like:
Stavrosound has a post on using multi-band expansion for dialog tracks. (In our shop we buss all the dialog to a subgroup with Samplitude's multiband expander strapped over it.)
I'm going over much more detail about mixing for film at blog.pleasurefortheempire.com because it's such an incredibly exciting topic.