That's interesting, that Canon 6D really retains a lot of detail in its jpegs. I always shoot in raw, but it does end up taking up a lot of hard drive space.
I find that a light touch often works best in post processing, and you've certainly exhibited a subtle editing technique here. Nicely done :)
Yeah, I've been shooting in RAW+jpeg since then. I have two 32 GB cards now, so I have plenty of space. And my computer has a 2 TB hard drive. No worrying about file sizes for me!