Can you elaborate on the soundstade size differences between those? I own ex1000 and my biggest complain is the soundstage size. While it does feel 3d and has some imaging even... It feels very small and therefore not convincing. compared to IE8 at least, which i enjoy more because of this. From your comparison both competitors are not better in this regard.
Seems like we don't have the same perception of the EX1000's soundstage. To me, the Sonys sound large and out-of-head, perhaps not as much forward projected as the IE8's, but still comparable in absolute size. I've heard some complaints from fellow members, who felt the EX1000 were too wide and their center image was too weak. But no one has ever called their soundstage small and unconvincing.
With the IE800, I feel that soundstage depends on whether you wear them over-ear or downwards, probably due to their slightly angled housings and different insertion depths. Over-ear gives me more width (which I like), but at the cost of center image, so left and right feel somewhat disjointed at times. Downward results in a more coherent soundstage with stronger center image, but at the cost of some width. However, absolute dimensions are always smaller than the IE8's imo, but not overly so. Plus, they don't feel closed in.
I'm a big soundstage junkie, and the IE800's soundstage is perfectly acceptable in my book.