When I ran a torture test designed specifically to bring out the phosphor trails, the Pioneer Kuros exhibited slightly less compared to the Panasonic plasmas, though if you're one of those who are particularly sensitive to it then it's very likely you'll see them on all plasmas.
thanks Vincent for your reply.
Indeed, I know I am more sensitive than the average user, but I have not many choices other than sticking on plasma technology, LCD is still for me a notch below.
I have gone a bit deeper in getting to know this tv set and finally found a cooperative shop that let me test it the way I wanted and, especially, compare it with a 428xd. I used Sin City as my test bench to trigger phosphor trails. I have to say that the kuro was "fully calibrated" (words from the shop owner, offering similar calibration on my future model for 200 Euro) whereas the Pana setting were copied from experienced users online.
My personal result: I can easily live with Kuro's trails, hardly with pz85's...

BUT (there's always a but...), I have to say that with the same room illumination and trying to keep the brightness and the contrast of the PZ as low as possible (which seemed to help with the trails), the details of the scene in darkness were much clearer on the PZ than on the kuro...so, I remembered the results on the 4280 and the non-perfeclty flat gamma tracking

hence, to cut it short

, my new question: since the review of the PZ85 does not explicitly report the gamma tracking, but only RGB, how would you compare it to the 4280? is there the dip between 0 and 20% signal as for the kuro, or, as my observation seemed to suggest, details in dark scenes may be a notch more evident in the PZ especially in daylight?
thanks again