Listened to 1.7s and bought 1.6. I could not tell any real difference other than a smidge better base in the 1.7 so the $800 price difference between 9/10 1.6 used and new 1.7 was not justified to me. Also, I disliked the look of the aluminium caps on the sides of the 1.7, but now I am told those are optional.