Goose bumps? No, but a real big smile every time I hear something I wasn't hearing with the Fidues on the same song. Just listened to Quicksilver Messenger Service's 1st album (hippie rock), and on the first song, in the first 10 seconds, the tone of one of the guitars was so much more clear and present I had to play that section twice to make sure I was hearing what I was hearing. I've been listening to this album for <mumbled> years (alright, since the damn thing came out, Google if you are curious) and never heard that guitar sound like that before.
I got goose bumps when I first tried my Pono expecting ehh and got ahhhh. I got goose bumps when I put the Moon balanced cable on the Fidue and got an entirely different (fuller) sound signature. With the 846 it's like a better Fidue. That's why I said, maybe 20+% better but three times the cost. For people on a budget, the Fidue is an excellent buy, giving you an experience close to TOTL for a third or less of the cost. If you have the money, the 846 is better. I made the choice. I'm selling the Fidue and the X5, as I really like the 846 with the Pono. Oh, and the fit is better as well, once they are in there's no fiddling around (I walk with them and the Fidues would sometimes need a wiggle to reseat them).
What do YOU need purchase justification for? You are H20Fidelity, master of sound. You want 'em, get 'em. You know you deserve them. And a Pono. And a nice expensive cable (balanced) to go with them. If you buy the Moon Shure SE cable it will work on the Fidues AND the 846s. How can you resist?
And, and Happy Australian Labor Day tomorrow (or so says my American calendar).