Director of Triple Divide » Editor » Investigative Journalist » Photographer » Permaculturalist » explorer of the unknown.
Anyone before submitting should have a lawyer review the submission agreement HBO drafted.
You can check personal-view for used gear http://www.personal-view.com/talks/categories/marketplace or post about wanting to buy a specific camera body.
I preferred the Tascam DR-100 over the Zoom H4N mostly for personal reasons. We had a Tascam and a Rode NTG-2 for our latest documentary on fracking, "Triple Divide": http://tripledividefilm.org/ — I'd say 30% of the film used the onboard stereo mics (we used these in our "Split-Estate" chapter), and the rest the NTG-2 (this can be heard in the chapter "The Judys"). There's clips on our VOD if you want to compare the two. Hope it helps.
For the low end mobile office: I'm using a GH4, shooting 4K, running a macbookpro 2012 and LACIE 256GB SSD w/ thunderbolt (has to be thunderbolt). Shot a 30 and 15 second commercial for a national client recently and it works, but add any serious effects and it slows down considerably. I haven't had any luck with anything else but SSD drives, at least not for the type of editing speeds I want.