I predominantly used to use LR 5 with a custom profile created with a Spyder Checkr. The samples int he first page are all processed this way.
I have used Capture NX2 and while it does get some decent results out of the D800 files, the user experience makes me want to throw heavy objects at a wall.
In the later posts, I have posted some samples I have processed using C1pro, where I created a custom preset using a sample shot of my Spyder Checkr.
In the past, I have also tried RAW Therapee, Photo Ninja and DxO and have rejected using them for various usability issues.
My files are always finished in Photoshop.
None of the above can cure the plastickyness that comes with the D800 files (Or the 5D3 files for that matter. I often shoot alongside another guy who uses a 5D3).
I can try to do new things in processing, sure, but the files from my very old D70s have much better skin tonality using the same workflow, so it's not down to my (Lack of) technique alone.
The Leaf files, in comparison look splendid right out of the box.
Here's an image from my last gig processed using my C1pro workflow (Shot with the D800 and an Elinchrom Quadra through Maxilite reflector and an SB 900):
I still am not completely happy with the tonality of the skin.