I picked up a 35 1.4 v1 a little over a year ago and it's on my camera a lot. I love the look of that lens and the balance on my 6D.
I have been mostly buying used the past few years, paring down my lesser used lenses. My kit 24-105 v1, a used 17-40, and the 35 are by far my most used lenses. I can't justify the expense of the new versions. I'm not sure that with my moderate skill level I would see that big a difference anyway.
That being said, I love that Canon is always pushing their lens designs.