IE800 is one of my favorite, great IEM from TDK!
Switching from vSonic GR07BE to TDK IE800, and the thin vocal now has better more realistic body :) Vocal on IE800 is just better than GR07BE. Clarity is about the same on both, but midrange is much better on IE800, more body and more natural. But I don't perceive IE800 as mid-centric, more as natural sounding with good clarity.
I also prefer silicon tip for IE800.
As questioned somewhere, about comparison of IE800 and Yamaha EPH-100, I happen to have both of them. For my sonic preference, I prefer the clarity of IE800. EPH-100 although sounds nice, natural-dark, with smooth, warm, and thick midrange, is a bit too dark and lacking in clarity for my taste.