Lots of people recommend Gould in this thread. Check out the difference of the first invention in the link above with the first invention of Gould, and see what you prefer: https://www.youtube.com/watch?v=vQot-jM6FSw
I don't have an opinion about whether anyone has butchered Bach or not, but, after listening to a half-dozen interpretations of the WTC (all on piano), I find that I like Zhu Xiao-Mei's the best.
It's indisputable that he was a virtuoso on the keyboard, but unfortunately he accompanied that with annoying humming that many recordings pick up way too much of.
