I would rate Joola Rossi Emotion among the top 3 of all my blades. I would rate it as the best carbon blade I have ever used, like getting the best qualities of wood and carbon blades. Of course this would also depend on my style of play; I play push-blocker style with the capability of opening loops from both wings. I play near the table to mid-distance using TO5 and 1Q rubbers.
I have not tried Treiber K so can't make any comparison. Hope this helps.
Tantalising! I haven't tried the Rossi Emotion blade, liked quite a few other Joola blades though.
I've been playing for 40+ years as well, but with a rather long leave of absence leaving me out of touch with basically everything that happened between 1985 and 2015, materialwise. So the Rossie Emotion sounds like quite the thing, and I'd love to try one sometimes.
That being said, I've settled very happily upon the Treiber K, have been playing with it for many moons now and have no plans to change. I'm an intermediate level player these days, with a reasonable markedly offensive play near the table and a step away. I depend on flicks, spinny as well as powerful loops on both wings, but also softhanded as well as active blocks and counterspins directly off the bounce. With the Treiber K I have an immense feeling of control, feeling the exact contact spot. It's like an extension of my hand; when I flick, or block, it's as if I'm touching, lifting, striking the ball directly. The short game feels good, and the blade has serious power reserves. Fullblooded loopers might consider it a bit stiff, might want a bit more flex. I don't.
There are some similarities. The Rossi Emotion is Hinoki (very thin), Koto, Carbon, Ayous, Koto, Hinoki, the Treiber K is Koto-ALC-Limba-Kiri-Limba-ALC-Kiri (same as the BTY Viscaria, TB ALC, TB Spirit, ZJK ALC).
The Treiber Z, I believe, may be inbetween the two; it's a Hinoki, ZLC, Ayous, Kiri, Ayous, ZLC, Hinoki blade. I'm mentioning this because of the use of thin Hinoki layers, with a more explosive/stiff layer directly underneath. I'd love to try one of those too, of course.
Anyway, TL
R Been playing with the Treiber K for a long time now, and have yet to find fault with it.