I picked up the Mikros 90 today. I am hearing them pretty much the same way Ric4001 is. They are verrrrry nice! Clear, silky smooth extended top end, clear fast midrange and a very tuneful, balanced non-boomy bass that goes quite deep. Drivers seem to be precisely matched, giving a very open, spacious stereo image. And a very exciting listen, great sense of dynamics.
Fit is tight and takes some getting used to, not a lot of flexibility to get the fit just right. But undoubtedly they will loosen up over time.
I'll get back later with further comments after I get more listening in....
Coming from your experience, I'm feeling more confident in these.