Picked up my R...n... QT5 from the post office this morning, took some time off and so far I like them quite a bit right out of the box. Someone else compared them to the KZ ZSN but to me they're a step up from the ZSN - slightly more dynamic, impulsive and 'musical', beautifully transparent and airy, more precise location and very good instrument separation even with crowded tracks. The stage appears a bit wider too, not as deep though. They're a bit heavy on the upper mids (brighter), more than my ZSN but not as much or piercing as e.g. un-modded KZ6. Before I forget, these puppies appear to be very well made, a little heavy, no aluminum here but rather some Zn alloy or brass (I'll check later).
Bottom line: 19 Eurons very well spent.
Edit: image added