The mid and high horns on the Uccellos are a definite upgrade and they use ALK crossovers. I believe Volti did as well until he changed a couple of values and stopped paying ALK. So no doubt they are a bit better. Not sure on the mid and high horns on the Volti, probably an upgrade though as you said.
You could easily upgrade the Klipschorns in the same way though (if buying an old pair).
I think they both look nicer than the Klipsch speakers and would give the Uccellos top marks
I heard the Volti’s at the RMAF in Denver a few years back and they were excellent and Greg offered them to me for $12000 but they were far to big for my flat.
System’s tidy, , I’m guessing other sources are available but it’s nice to see a simple RP, Amp and Phono on a rack. All top quality too.
I bet it’s a joy listening to records on that.