Thanks for the link! I believe on the 5D III, if you use Magic Lantern, there is an Auto ETTR option, that will try to not clip highlights. That could be very useful, if it worked well.
I'll experiment more today with differen't ISOs/Shutter Speeds. To see if I can get similar noise and detail.
As far as Noise Reduction goes, just in that initial test of DxO, I almost want to say that it's the best I've seen/used. I've tried Topaz Denoise,along with 3-4 other applications/methods, as well as using Lightroom. The others aren't bad by any means. But DxO seems to just do it right, with 1 click, and waiting a little bit of time.
I'm going to test this again in a minute, on a photo from Alaska I took in 2012, of some whales. It was poor conditions, and the final image was super grainy . This was also from my lack of knowledge/experience. I feel DxO may recover the image extremely well.