Just a small thing on the bass. I went right to the Comply mediums (not the thin or T100 smalls) and found the bass to be excellent, as HPA said, made the X10s sound kind of thin. I also stuck on a pair of olives, same result. Didn't try the silicone or other tips. And now the 3s are back in the box, until Xmas. But the bass is still on my mind, just a wonderful sound. I owned Atrios v1, but not IE8 or any other top shelf (in terms of cost) universal, apart form the SA6s and X10s.
Chris, it's a real mystery. I have to believe it's the tip. Just try the foamies, for science's sake.