Oke, KZ R1 are in front of me. (sorry for my english if there will be any mistakes, I'm polish ;))
I can only compare'em to my old Philips SHE 9500. Seems less solid than Phillies. Sound is ok, pretty same level as SHE 9500, maybe lil bit deeper bass, but as have said, sound level is fully accepted, and it's not worse sound than in these phillies.
One big minus for me is big microphone effect. I have bought them mostly for 30-40 min jogging so you know, cable will face a lot of movement, and it's very annoying. I will have to do some modifications to reduce it, or if it wont be possible, i will have to look for other earphones (still thinkin about that CoGoo).
Any suggestions about reducing mic-effect will be very helpful.
Get an ear guide!! Pretty much removes almost all cable noise.
Like my EDSE :