Goertz or Grover?

Highs were a little too much with the Goertz. If you are looking for some accurate cables that might take the highs down a bit you might try van den Hul D-352. Super bass, mellow highs even though they are silver coated.

I found the MI2 to have very beautiful midrange tone and realistic bass the highs were very open and maybe a bit forward but never got on my nerves like Jambalaya mentions

fwiw ymmv

have not heard Huffmans either

I've owned several pairs of goertz mi-1 and 2 and now use huffman. The comments about oscillation with goertz are correct. I had real problems with one amp.
That said, the huffman zx are superior across the board, in my experience. More transparent and dynamic, and with a smoother, better defined top end. YMMV, of course.