Just a heads-up, Sensaphonics is having a facebook raffle where if you like their page and share the raffle post, you are in the running for both a Sensaphonics 2-XS CIEM and the awesome ear-saving dB Check
Here's a review of the dB Check http://www.head-fi.org/t/657984/review-sensaphonics-db-check-in-ear-level-analyzer-you-only-need-it-if-you-have-ears
Both the N6 and the K10 are favorites of mine. The 6 is less warm and a little less full sounding to my ears. The k10 is warmer, richer, yet still detailed, that's what makes it special. There's a discussion in the thread I started in the k10 about synergy with players and amps so feel free to contribute.
I have a glacier and I'm very happy with it.More comparisons between the z5 and 846/k3003/ie800 are welcome as I've heard all three (just went back and spent another hour with the k3003) and own the ie800.