I'm a fan of the Cella Sapone Extra Extra Purissima 1kg block, for some reason not the red tub.
Solid performer, great value and I use it as my shave test soap.
Yes, you can get more cushion and glide from other soaps as you climb the soap & cream food chain..
But Cella has a spot in my primary basket O soaps...
Smooth Shaving...