/ Speaking of the CX6, while I can't say how any of the CX line sounds, I have heard all of the Rooth LS lineup and the LS6 may just be the best in the lineup as it is so very neutral (and on the bright side) with a liquid presentation that combines amazing clarity and reminds me of the NT-6 in many ways.
As far as the CX8, I was told there are two options, one with the dual super lows, or, like the LS8, dual super tweeters. If the CX8 came in that configuration, sounded like the LS6 but with better treble extension, that would be a very nice CIEM.
Yeah, I've had the impression the CX6 / LS6 is the best one in the series too. They seem to be identical. I have one on the way now, finally.