Blackheart
I know there not stiffeners. The royal and shark regular brush roll let's say are same quality bristles. Royals are built into the brush roll. The shark is another brush roll entirely.
They both help agitation in different ways. The shark is 11.4 amp. I have seen 100 plus cfm from a 10 amp shark.
My point it's a different method of agitation. The shark has a hose easily accessible.
The shark vacuum is going to be a good vacuum. Im trying to have people get past the stereotype.
I still want a shark version of a crosswave to come out.
Les