Nope. If I do ever do a blind test, I'll post as much. It'd be hard to set up a better than single-blind test though. Regardless, I could also set things up with headphones and music in a way that I'm confident I would fail it or pass it depending on what I chose for both, eg: Sony XBA-3s listening to Van Halen = FAIL. UERMs listening to recent DECCA high-res recordings = I could pick the X5 and AK240 apart easily.
Instead, I think the previous question about value is important and covers the same ground: The AK240 is about 6x the cost of the X5 but I think for it to be a worthwhile purchase one has to intend to both own or buy top-of-the-line IEMs (or headphones, but I'm not there yet with my impressions), value listening to excellent recordings as a big priority (more on that later) and value the features and design it has. Even so, with a pair of UERMs it is a 2x outlay over the Sony with them. The X5 (at least once it has playlist support) will, IMO, kill the others in bang-for-the-buck and the Sony too, if you include having a full Android system as being a big thing.