I use Comply Ts500's which you may find help. I also noticed a significant improvement in top end smoothness when I got the CEntrance HiFi-M8, they seem to be a very good pairing together. Switching to a Mac based setup using Audirvana Plus as opposed to a PC/JRiver based setup made an overall improvement as well. Now, any traces of over emphasized sibilance have been pretty much eradicated with this setup.
Edit: I should also mention that I use the Tralucent gold/silver cable.
Edited by elnero - 3/6/14 at 8:56pm