This isn't quite on-topic but I downloaded the latest DxO Photolab 4 and tested it's "DeepPRIME" raw conversion and noise reduction algorithm on some D6 images, and was pretty impressed. The software has come a long way from what limited features it offered in its early versions, to a more fully-featured editor. I think for getting the most out of very high-ISO images, this is a worthwhile option. I will post some comparisons with Nikon converter, ACR, and DxO later. I posted this on this thread simply because I felt D6 users might be inclined to shoot in ridiculously low light where also the best algorithms may be worthwhile.
Interesting how the camera industry seems to be on a decline in terms of volume but both the camera technology itself and editing software are both rapidly improving.